Whimsical pranks using craft (traps)

[Swashbuckles]

One of my players has made a gnome rogue who's really into "dumb pranks" (the player's own words), and one facet of this is putting her obsession trait into craft (traps).

I'm struggling with making this work in combat, but talents like quick trapsmith should help (and getting rid of the prohibitive cost of simple arrow, pit, and wire traps), but this thread is more asking about harmless and/or whimsical trap pranks she might be able to use on non-hostile NPCs and PCs alike. She's already made liberal use of her innate gnome magic to mess with her party members, in a delightfully non-tone-breaking way.

Already thinking of statting up a whoopee cushion using the trap creation rules (CR -), any other ideas?

[Evilserran]

I very often on many of my characters carry bags of maarbles ( i specify they are metal, so i can use a magnet to pick them up. I often drop them where foes are going to go or around me in ombat to cause issues. I have used dirty tricks with them to make people fall prone etc. Basically any dirty trick maneuver could work for this, flour for blinding people or finding the invisible target, bag of dry leaves to mess with tremor sense/hearing sensitive enemies, glue in all its forms, caltrops, etc

[avr]

A teapot (or coffee pot, whatever) which can pour from either of 2 reservoirs inside it might fall under craft (traps).

A trapped garment (scarf, coat, hat etc.) which either tangles you up when you put it on or which does actual harm.

Anything which might break, crumple or fail doing so under unusual circumstances.

[Mark Hoover 330]

Dribble cups; vessels designed to make it more difficult for people to drink from, so when they tip it back they spill on themselves. Non-toxic inks in food/drink, clockwork buzzers concealed in a palm to "shock" people when the gnome shakes their hand; a false hand such that, after someone shakes the gnome's hand the person seems to remove the gnome's hand (complete the effect with spurting fake blood).

Really take any practical joke in the same vein as a whoopee cushion and these can be fun little pranks the gnome plays on unsuspecting NPCs. Another one is the old "fishhook on a line" gag. Fix a near-invisible line of wire to the wall with a very tiny hook on the end. When an NPC gets close the gnome, palming the hook in their hand, pats the NPC on the back or shoulder or whatever. The hook goes into an article of clothing and now the NPC is snagged on the line!

Rubber snakes or vermin could be fun here. Fake fruit to chew on is another. A mousetrap, but where the trapping arm is clothed over so it maybe deals 1 point of non-lethal damage or none at all. One of those paper finger trap puzzles. How about a pirate's spyglass that leaves black soot around the eye that's pressed against it?