I have too much paper. There, I said it. My studio has several deep drawers and boxes stuffed full of interesting scraps - prints of my earlier artwork, book pages, painted book pages, scrapbooking papers that I've only partially used, little things that I've saved 'just because'. Then there are the junk shops books which I've collected because they had pretty illustrations or were in French or Chinese or wonderful gothic-fonted German. And don't get me started on old Ordnance Survey maps because yes, I have piles of those too!
Occasionally I print copies of older pieces of work in various sizes so that I can reuse them. The tag and the journal page here have details from just such a piece. I like a bit of repetition sometimes.