They’re as basic as notebooks get, and cheap to boot. But as you can see from
via Austin Kleon’s Tumblr, some great artists have done fine things with them.
Go to a stationery shop or dollar store and get yourself one or two or more and get creating.
Colossal has some gorgeous paper sculptures on exhibit on their site. Created by Matthew Shlian, they are well worth seeing. Click the link to see.
These paper sculptures by Wolfram Kampffmeyer (aka Paperwolf) are gorgeous. You buy them and make them yourself. Simply go to Etsy, here, and order a from a range of different animals, sizes, and prices. Great gift idea, too.
If you want to see more of them, you can also check them out here: DIY Geometric Paper Animal Sculptures by Paperwolf. Not surprisingly, from Colossal.