Step 1: You Will Need:
1x wooden square (base)
1x long thick copper wire with no insulation on (finger holder)
4x long thin copper wire with insulation
1x buzzer (12 volt)
1x 9 volt battery
2x copper nails
2x short screws (length shorter than depth of base)
1x elastic band (or thin string)
Tools and bits:
saw (if you need to cut the wood)
double sided sticky pads
about finger size tube
Step 2: Make and put on the finger holder
take the tube out and bend the ends of the wire into tiny little circles and use the screwdriver to screw the two short screws in to them so the finger holder will be in place.
Step 3: Glue and make the hidden switch
mix the two araldites together to make an araldite glue. spread it on the back of the wooden board nd put in the un-bent paperclip in first. then put in the bent paperclip so the upper bit of it is over the un-bent paperclip but they must not touch.
Step 4: Put on the other parts (except the four wires)
then put on the battery and the buzzer by using the double sided sticky pads to stick on the back of them, then peel off the covers and stick them on the wooden board.