I have a stack of medium size pizza boxes (not used!) that I got from the local pizza guy. I keep my practice blocks in them. I write on the cardboard ('xmas' 'patriotic' 'black/white' 'blues' 'ugly') and stack in them the blocks that I was trying out a new pattern, a new color combo or just the extras from a top. Whenever a holiday comes up or I need a quick gift, I use one on a tote bag as a gift or as the gift bag. You can fold one in half and it is the perfect size to hold a wine bottle! The person receiving it thinks of it as an extra gift when I am actually using up my 'trash'.