Step 1: Infra-red Jammer - Parts List
1 x 10K Potentiometer
2 x 10nF Capacitor
As many IR LED's as you please
Equal amount of 330 Ohm resistors for LED's
1 x 56 Ohm resistor
1 x 555 Timer IC
You can get most of these parts from an online retailer or electronics hardware shop relatively cheap.