£1 Trolley Coin with Keychain Hole (Pound Coin)

Here is a simple coin substitute for the UK. It’s the same size as a standard £1 coin and has been tested in B&M, Home Bargains, Lidl (both large and kids trolleys), Tesco, and Asda. 

The built-in keychain hole lets you attach it to your keys so you always have one to hand, and it uses only about 1 gram of filament—perfect for finishing off an old spool!