Paper bunting - I'm making this right now! Bought a pack of scrap paper at Target for 99 cents - contains 8 pieces of paper! Following this tutorial, that's 16 triangles. For 99 cents. And it wasn't even on sale.
(Used this mostly as inspiration for Ellie's 1st birthday banner.) Didn't use paint-chips. (Seriously people, that's basically stealing.) Cut hearts with Cricut (about 2.5"). Cut "Happy Birthday" w/ Cricut (1.5"). Glued letters to hearts, punched holes in the tops and strung coordinating ribbon through to hang. Took two hours, off and on.