Rusty Pickle used to manufacture clear acrylic albums and a variety of other scrapbooking supplies. Unfortunately, they closed up shop and their products are now only available on the secondary market (if you can find them.)
If you do happen to find a stash of these for sale somewhere, the Rusty Pickle acrylic albums are perfect for scrapbooking, mini books, altered art, art journals, altered books, or other craft projects. These acrylic albums could be embellished with your choice of papers and embellishments: transparencies, clear overlays, rhinestones, bling, rub-ons, stickers, chipboard, cardstock, etc. You can also incorporate techniques such as stamping and inking.
If you don't already have these in your crafts supplies stash, and you're looking to buy some brand new supplies, please be sure to check out the latest clear albums and related supplies.