Anything from 3.5 or Pathfinder, or any other game system, is welcome here. I'm not looking for metagame/overpowered/campaign-ending items (looking at you, Wizard optimizers) but rather for items that were interesting, fun, or had a cool or unique set of powers. Bonus points if you have a reasonable idea of the in-game cost (such as GP or crafting time)
Personally one of the best items I ever made for a character was the Utility Wand for my fiance's ratfolk spellcaster. She made a point to collect wands, really for no reason at all, so I periodically threw new and interesting ones her way.
The wand was actually a staff, but sized for a creature so small that it was the same size as a wand.
Aura moderate transmutation; CL 8th
Slot none; Price unknown, probably around 13 or 14,000 gp; Weight 1 lb.
This tiny staff is made of shiny metal, and capped with a glowing gem. When in use, the staff emits a high-pitched buzzing or humming sound. The staff allows use of the following spells:
Arcane mark (1 charge)
Detect magic (1 charge)
Detect secret doors (2 charges)
Jolt (2 charges)
Mending (1 charge)
Open/close (1 charge)
Spark (1 charge)
Craft Staff, arcane mark, detect magic, detect secret doors, jolt, mending, open/close, spark; Cost unknown, roughly 6600 gp.
Spoiler: cost/math guesstimations
Spell levels are 0, 0, 1, 0, 0, 0, and 0. Caster level is 8.
Spell trigger item with 50 charges = SL x CL x 750, an item with 50 charges is half the unlimited use base price.
Use a SL of 0.5 for cantrips. Per the multiple different abilities rule, the most expensive ability is at 100% cost, all additional abilities are at 150% cost.
So for our 1st level spell (Detect Secret Doors) the base cost for unlimited use is SL (1) x CL (8) x 1500, or 12000 gp
All the 0 level spells will have a base cost for unlimited use of SL (.5) x CL (8) x 1500 x 1.5, or 9000 gp
With 6 of the 0 level spells and 1 first level spell, the total cost for unlimited casting is probably about 66000 gp.
1 charge per day (though it can store up to 10 charges) means we divide the total by (5 divided by 1) or essentially divide by 5.
1/5 of 66,000 gp is 13,200 gp