Knot lamp turns on when tied together

Interesting Engineering

Designer Celia Torvisco has designed a lamp that might leave you in a knot. The knot lamp will only turn on when you tie the two threads together. This provides two functions; a textile tie and an electrical connection, making it useful in a variety of situations. It comes in a choice of two colours; white and black. Check it out and let us know what you think in the comments: