i don't think I've seen talcum powder mentioned here but it was welcome to relieve by brother's soggy feet. I put some in a small squeezable bottle and glued a bit of that thin plastic you get at the bottom of CD spindles over the top, with holes in it.
cheapo freezer bags are very handy, they are long, light, you get plenty on a small roll and good for keeping things fresh, especially meat. I used one for saving some chicken kebabs til later.