Today I created a page that generates a random URL. The user inputs a base URL that indexes using numbers, for example, https://www.printables.com/model/, and the page will place a random number on the end. This provides the user with a random link on the site.
This site works with any base URL with numbers at the end, however, it will not always return existing links. If a returned URL leads to a 404 page the user can simply load a new URL and try again. The page is: https://zidri.github.io/RandomNumURL and the source code is on my GitHub.