Useless Inventions I Briefly Thought Were Good Ideas

Tiny Baking Pans - A tiny baking pan, so you can make only 2 or 3 brownies at a time. Unfortunately, most brownie recipes call for a full egg, and it's difficult to do a fraction of one.

Automatic Sandwich Maker - There are five tiny platforms, each cradled by a mechanical hand. You put your bread on the first, then veggies, then cheese, then meat, then another slice of bread and press a button. Within seconds, your sandwich is assembled. Unfortunately, you still have to put on your own condiments.

Wifi on the beach - Internet on the beach! Check the weather, sport scores, blogs, whatever. Unfortunately, it's difficult to see laptop monitors in the sun.