I know this has been up here for a while, but thought I would just say that I make cheese crisps and keep them in an airtight box. These are made by putting a piece of baking parchment on a plate, adding a little pile of grated cheese not too high and zapping it in the microwave for as long as it takes to melt and start to go firm. Then turn it onto a piece of kitchen paper to absorb the fat, and peel the paper away, it should be quite firm and will become crispy when it's completely cold. Timings vary with different cheeses. You can use the piece of parchment over and over till you've made as many as you want. It's a bit time consuming but I don't do them every day, and they certainly take away the craving for crisps. I understand that you can also do them in the oven or in a heavy based frying pan, but I've never tried it.
Enjoy!