I have been thinking about the puffy paint. If you like to cook and use certain spices all the time you could mark the lids of the spices with puffy paint. When you buy new just switch out the lids then your special label will still be there. I do not think it would be good for your groceries since it does take 24 hours to dry, and I do not know how it holds up in the freezer.
You could mark a stereo or DVD player where certain buttons are. You can be very creative with puffy paint. When I first found out about it, I think I went through at least 3 bottles. But it can really make your life easier. Let me know what you mark!
"The only difference between successful people and unsuccessful people is extraordinary determination."
Mary Kay Ash