1 minute
This is 20"X20" so standard size plywood to use would be 24X24 (materials selection of this project did not have 24×24 so please keep that in mind). This is based off of Maple, but any material will work well.
5 minutes
One option if you do not just lean this against something is to hang it on the wall. Attach hangers in the back or just nail it to the wall!