Playlist of short videos for lots of cutting, bending, and finishing ideas Learning Library - YouTube
Canary Cutter - for cutting cardboard or serrated butter knife works almost as well as a canary
Brads
MAKEDO - use makedo and other systems to hold together cardboard while glue is drying - then take out - wood glue works best. HUB for MAKEDO ideas https://www.make.do/pages/hub