I've become interested in what would, many years ago, have been described as 'contraption' devices. Sound makers included in the early drum or 'trap' kits.
I already own several of these instruments. Duck call, siren whistle, cuckoo whistle, ratchet, wash-board, a temple block, and various other hilarious novelty sound makers.
I wanted something that went 'POP!'
A professional orchestral 'Champagne-Popper' would cost around £130. I'm mad, but I'm not that mad.
Having thought about the subject for a couple of days I realised an old bicycle-pump with a cork stuck in the end would probably do the trick.
Down the market I bought a pump for 0.99p:
I sawed the end off:
I stuck a cork in it:
It needs a better fitting cork with a restraining string fitted so I don't spend inordinate amounts of time retrieving the cork from under various items of furniture.