Alter-scrap, aka alternative scrapbooking. The most succinct and concise definition I ever met on the Internet, 'Everything is applicable!'. To join the wonderful world of alter scrap, feel free to take any junk — an old light bulb, various cans, boxes, thread bobbins and so on. But the base is unseen by the end. All the rest is a traditional scrapbooking.
I suggest a walk around the kingdom of alter scrap and get inspired from Pion Design. The works of the design team are gorgeous!