Copper Foil Tape with Conductive Adhesive - 6mm x 15 Meter roll
By Adafruit (1128)
MCM Part #21-14620
Copper tape is a great addition to your toolbox. The tape itself is made of thin pure copper so its extremely flexible and can take on nearly any shape. You can easily solder to it, and the tape itself can carry current just like a wire.
On the back is an electrically conductive adhesive. The adhesive can't carry significant current but it is very handy for sensing applications where you don't want to solder the copper tape.
Copper foil tape can be used for EMI shielding, working with EL, making capacitive touch pads, ultra-thin wiring needs, etc.