Print out the templates and cut them out. Use your plastic sheet template to cut 8 pieces from your plastic sheets.

Cut 8 pieces of wire of 15cm in length. Remove 1cm of the plastic covering from both ends of the wires.

Wrap foil around one end of each piece of wire. Stick the foiled end of the wire to the edge of a square (7m x 7cm) of foil. Flip the foil square over and using double-sided tape, stick it in the centre of the plastic cut-out (with the wire coming out by the extended part of the plastic sheet). Stick the wire to the plastic sheet with a couple of pieces of tape. Do this for every plastic sheet.

Using the foam template, cut your foam into four 10cm x 10cm squares, with a 2cm hole in the center of the square (as on template sheet).

Sandwich each piece of foam between two of your plastic sheets (with the foil touching the foam), making sure the foam completely covers the foil (except for the hole in the foam). Stick the edges of the 2 plastic sheets together with a strong glue or single-sided tape.

Test your mats with a battery and an LED, by using the mat as a switch, pressing down on the mat should light up the LED.

You can print and cut out the arrows template to make your mats look great. Have the arrows facing away from the wires of the mat.