I like to create and I have a lot of interests. When I get an interest I tend to make products to help that interest. I do this all the time.
When I show these products to the people they love them. By far my most popular item is the Rental Property Calculator Spreadsheet.
My favourite is the Improv in the Basement game. It is basically the "Whose Line Is It Anyways?" - The Home Game.
There is also a couple of computer manuals and one on stock trading.
So take a look and see if anything piques your interest.