Cup of Critters (Patreon)

Decorated with a variety of bugs and vermin, this clay cup was famously was used to prank the King at the time. The Prankster was later beheaded.

As players might hesitate to spend a charge on pranks or roleplaying, there's the option of both harmless and aggressive critters! By all means, I'd suggest DM's allow felxability with what the harmless creatures might be (Bats? Squirrels? Ravens?) depending on the player's preference.

This can easily be made into a common item, but allowing just harmless critters to be conjured. As long as it doesn't give them an edge in combat, there's no reason it can't have unlimited use.