<script type="application/ld+json">
{
  "@context": "http://schema.org",
  "@type": "FAQPage",
  "mainEntity": [
    {
      "@type": "Question",
      "name": "What are the business hours?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Our business hours are from 9:00am to 5:00pm, Monday to Friday."
      }
    },
    {
      "@type": "Question",
      "name": "What payment methods do you accept?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "We accept Visa, Mastercard, American Express, and Discover."
      }
    },
    {
      "@type": "Question",
      "name": "Do you offer refunds?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Yes, we offer refunds within 30 days of purchase if you are not satisfied with our product."
      }
    }
  ]
}
</script>

In this example, we have an FAQ page that contains three frequently asked questions (FAQs) along with their corresponding answers. The @type property of the top-level object is set to FAQPage. The mainEntity property is an array of Question objects, each of which has a name property (the question itself) and an acceptedAnswer property containing an Answer object with a text property (the answer to the question).

<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "ImageObject",
  "contentUrl": "https://example.com/image.jpg",
  "name": "Example Image",
  "description": "A beautiful example image",
  "thumbnailUrl": "https://example.com/thumbnail.jpg",
  "uploadDate": "2022-03-28T10:00:00Z",
  "width": "1200",
  "height": "800",
  "author": {
    "@type": "Person",
    "name": "John Doe",
    "url": "https://example.com/author"
  },
  "publisher": {
    "@type": "Organization",
    "name": "Example.com",
    "logo": {
      "@type": "ImageObject",
      "url": "https://example.com/logo.png",
      "width": "600",
      "height": "60"
    }
  },
  "associatedMedia": {
    "@type": "VideoObject",
    "contentUrl": "https://example.com/video.mp4",
    "description": "An example video",
    "name": "Example Video",
    "thumbnailUrl": "https://example.com/video-thumbnail.jpg",
    "uploadDate": "2022-03-28T10:00:00Z",
    "width": "1920",
    "height": "1080",
    "duration": "PT1M30S"
  }
}
</script>

This structured data includes information such as the image's URL, name, description, thumbnail URL, dimensions, upload date, author, publisher, and associated media, which can be used to enhance the image's metadata in Google Images search results.

<script type="application/ld+json">
{
  "@context": "http://schema.org/",
  "@type": "Product",
  "name": "Example Product",
  "image": "https://example.com/product-image.jpg",
  "description": "This is a description of the Example Product.",
  "brand": {
    "@type": "Brand",
    "name": "Example Brand"
  },
  "aggregateRating": {
    "@type": "AggregateRating",
    "ratingValue": "4.5",
    "reviewCount": "10"
  },
  "review": [
    {
      "@type": "Review",
      "author": {
        "@type": "Person",
        "name": "John Doe"
      },
      "datePublished": "2022-01-01",
      "description": "This product is amazing!",
      "reviewRating": {
        "@type": "Rating",
        "ratingValue": "5"
      }
    },
    {
      "@type": "Review",
      "author": {
        "@type": "Person",
        "name": "Jane Smith"
      },
      "datePublished": "2022-02-01",
      "description": "I'm not a fan of this product.",
      "reviewRating": {
        "@type": "Rating",
        "ratingValue": "2"
      }
    }
  ],
  "offers": {
    "@type": "Offer",
    "priceCurrency": "USD",
    "price": "50.00",
    "priceValidUntil": "2023-12-31",
    "itemCondition": "https://schema.org/NewCondition",
    "availability": "https://schema.org/InStock",
    "seller": {
      "@type": "Organization",
      "name": "Example Seller"
    }
  }
}
</script>

In this example, we have structured data for a Product named "Example Product". It has an image, a description, and a brand. It also has an AggregateRating, which includes a ratingValue of 4.5 and a reviewCount of 10. The Product has two reviews, one with a ratingValue of 5 and one with a ratingValue of 2. Finally, the Product has an Offer, which includes a price of $50.00, a priceValidUntil date of December 31, 2023, an itemCondition of "NewCondition", and an availability of "InStock". The Offer is being sold by an Organization named "Example Seller".

This is a fun math trick that works only for the year 2001. Here's an example PHP code that implements it:

<!DOCTYPE html>
<html>
<head>
	<title>Chocolate Math</title>
</head>
<body>
	<h1>Chocolate Math</h1>
	<form method="post" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>">
		<label for="chocolate">Number of times per week you want to have chocolate:</label>
		<input type="number" id="chocolate" name="chocolate" min="1" max="9"><br><br>
		<input type="submit" value="Calculate">
	</form>
	<?php
		if ($_SERVER["REQUEST_METHOD"] == "POST") {
			$chocolate = $_POST["chocolate"];

			$result = (($chocolate * 2) + 5) * 50;
			if (date("md") >= "0422") {
				$result += 1751;
			} else {
				$result += 1750;
			}
			$result -= $_POST["birth_year"];

			$original_number = $chocolate;
			$age = substr($result, -2);

			echo "<p>Your original number was: " . $original_number . "</p>";
			echo "<p>Your age is: " . $age . "</p>";
			echo "<p>The number you calculated is: " . $result . "</p>";
		}
	?>
</body>
</html>

This code creates a form that asks the user to input the number of times per week they want to have chocolate and their birth year. When the user submits the form, the values are passed to the server using the POST method. The PHP code then calculates the result using the steps in the Chocolate Math trick and displays the original number, the age, and the calculated number.

Note that this is just an example and you should customize it to fit your specific needs. Also, remember that this trick only works for the year 2001, so you might want to update the code to reflect that if you plan to use it in a different year.