Double-sided Adhesive Tape

Conductive hook & loop tape is just like the stuff you've seen on jackets, clothes, shoes, and bags, but is coated with silver to make it fully conductive.

Z-axis tape is made by 3M, and is used to bond two conductive surfaces together and allow a small (we'd say keep it under 100mA) current to flow through the tape.

This sensor is essentially a reed switch, encased in an ABS plastic shell. Normally the reed is 'open' (no connection between the two wires). The other half is a magnet.

This conductive (and self-adhesive) tape is great for all kinds of applications: adhesive circuits, wearables and more.