I bought a Cajon box drum a few weeks ago from www.thomann.de, I’m really enjoying it!Its a pretty simple design; a hollow box with a hole on the reverse side, and behind inside the front panel, there’s a series of thin guitar like strings to give it a nice snare rattle.
As you play you notice the different tones you can get out of it. The top edge sounds like a snare and closer to the middle, a bass drum. You can fill in the rest with delicate ghost notes, these can be your hi-hats. You can also change the pitch of the drum by running your foot up the front panel as you play, do this with a nice fill pattern and these could be your toms.
So there you have it, kick, snare, hi-hats and toms in one box!