Other ideas for making money...

It looks like my schedule is going to preclude me from working more than 10 hours this fall. I already posted about making business cards and doing the playing piano at weddings thing. With the caveat, of course, that I don't have an electronic (or other) piano I could drag out to the site of the wedding, I think it would be a good idea. Here's some other things I could do:

• Tutor in GRE prep.
  
• A paper/resume editing service.
• Sell stuff on eBay. Specifically I want to make and sell headphone amps. Usually these come in Altoids tins, but I'm thinking I might be able to build mine into some snazzy Japanese candy tins, bought from Uwajimaya.
  
• Selling jewelry made from old electronics (resistors, capacitors, fuses).
• Make, wrap up, and sell gourmet meals for PSU students, on the cheap. Need to get my food handler's license for this one. Otherwise, this is probably the least additional investment needed, but most labor intensive.
• A service for scanning old collections of slides. I'm already doing this for my grandfather's paintings.
• Another eBay idea: buy computer components off Free Geek, New Egg, etc. as necessary to build DVRs with MythTV.