Had a sheet of plywood in the backyard, as well as some crud hardware, so I decided to make a cajon/portable kit thing. It sounds pretty decent for my lack of woodworking
Granite Percussion Birch/Plywood Cajon | Long & McQuade
Latin Percussion LP1461 Round Back Bass Cajon | Sweetwater
Rodrigo Percussion Pro Cajon | Derringers Music Australia
Mano Percussion - Wood Block With Beater : Nantel Musique