$5 Collapsible Display Shelf

How to make a $5 Collapsible Display Shelf. Although I use a table saw, a mitre saw and a band saw, this project could be done using a jigsaw and some sort of straight edge to keep your cuts straight.
This shelf is easily collapsible making it great to take to craft shows, where space (in your van) is already at a premium. It's sturdy and can be customized to be taller, deeper, add more shelves, whatever you need for your display.