I always try to keep a small stock of these are they are pretty popular at my fundraisers and they also make useful mini gifts.
They are very simple to make and a useful way of using up scraps of patterned paper and cardstock.
I sold virtually all of these at my last fundraiser so I had better get on and make some more for my next one!!
There are loads of tutorials out there for making post it note pad holders - this one comes closest to how I make mine.