Herein is an outline of how I built a parts holder bin (or whatever you'd like to use the bottom for) from a wooden craft box, and incorporated a 555 tester into the lid, with a pyrograph (well, actually two pyrographs) on the lid also.
Step 1: Parts, etc.
While testing the 555 tester circuit, I noticed it wasn't very "loud" so I also included an amplifier stage with this, but it is not absolutely necessary.
For the Tester circuit, see my instructable: 555 Tester
For the Amp:
IC1: LM386 audio amplifier chip
R1: 10 ohm 1/4 w resistor
R2: 1 k 1/4 w resistor
R3: 10 K 1/4 w potentiometer
C1, C3: 220 uF electrolytic capacitor
C2: 10 uF electrolytic capacitor
Socket: 8 pin
One small on/off switch
Speaker (8 ohm for .3 watts of output)
2 small circuit boards (or one larger one if you wish to put the tester and the amp on the same board)
Socket: one 8 pin wire wrap socket
1 wooden craft box
1 water bottle cap
1 spindle and rubber wheel to an old mouse
1 short section of a small plastic bottle
some spray and craft paints
misc. parts and pieces
One wood burning iron
one soldering iron
a drill (preferably with a selection of bits; I also found a small "circuit board hand drill" to
be useful as well
continuity tester (or VOM)
a glue gun can be handy
artist's paint brush
wire brush (one should have one any way to use on the soldering iron tip now and then, but file cleaning makes one really useful).