Paper Critters – Basically just critters of the same size but looking different from one another.
Paper Toys – A wide variety of toys you can fold (some you glue)
The Toymaker – The absolute best for toys you can fold yourself. They’re stylish, creative, and easy.
3D Paper Modeling Ideas for Kids – a HUGE resource of paper toys
For the adults.. try Wallspankers – a sticker-zine you can print out yourself.