In life, one needs only a finite number of tacky plastic rings, a limited amount of compasses, or one-size-fits-no-one paper crowns.
As for the jokes that lack any semblance of humour, well, even the worst comedians avoid using that material. Those working men’s clubs can turn nasty at the drop of a hat, so there’s no reason to incite a riot.
The most ingenious assassin would run out of ways to use the cracker part, though given sufficient inflammable gas in an enclosed space, it can create some quite impressive results.
Nevertheless, little boys never will tire of pulling crackers.