These four fine creations that have been superimposed on the Abbey Road zebra crossing are The Offbits, an open-source toy that the customer makes for measure. The Offbits come in a small and cool cardboard box and are a medley of springs and cast metal that are assembled by hand.

For somebody who finds it difficult to change a lightbulb, let alone a fuse, it took me some time to get to grips with the Offbits, but succeed I finally did. Then I swapped a few colours and pieces around and had a lot of fun… as did my 11-year-old son.

While I couldn’t stop thinking about the Smash Martians, the extraterrestrial heroes of a 1970s TV potato ad, the Offbits are modern and alluring. The company behind them is raising funds on Kickstarter next month – might be worth a small investment.