Main sources of inspiration:

• Cut Out + Keep
• P.S - I Made This
• A pair & a spare
• I Spy DIY
• Honestly... WTF

Other interesting sources:

• Craftzine
• Mookychick
• Glitter'n Glue
• ... love, Maegan
• Craftgawker
• Craft Snob
• Origami Instructions
• Craft Blog
• Curbly
• Cotton & Curls