I presently have three projects I'm researching. I don't have preliminary patents submitted yet, so I'm limited in what I can say here, but the general ideas are as follows:

Magnetics - I have a unique electromagnetic application using Halbach arrays and diamagnetic levitation.

Cryogenic cooling - Liquid nitrogen is used in some types of food preparation. I think I have a new application that restaurants will be able to use to provide better customer service and a better product.

Residential dumwaiter - I have begun work on a custom dumbwaiter for our house, but I've had back problems and surgery recently, so I have avoided doing anything requiring a lot of lifting and getting up on a ladder. There are companies that make dumbwaiters now, but I think I have an idea unique enough to make a marketable product that wouldn't infringe on existing patents.