Brainstorming

I'm trying to make up some very basic algebra problems -- along the lines of "if you have $x to spend on widgets and widgets are $y, how many can you buy if you also have to spend $z on a widget storage box?" But I'm running out of ways to talk about widgets. Any suggestions for other problems I might pose?

Blurt out anything you can think of; stuff I can't use might still inspire me to think of something else.