In a Planescape game, I saw Kender (from Dragonlance) get ahold of a Ring of Wishes.
The player, in true Kender style, put on the ring, and before anyone in the party could stop him, said:
"I wish for lots and lots of really neat stuff."
. . .the game paused while the DM had to consider that Wish.
When it resumed, what happened was that suddenly dozens and dozens of packages, bags, chests, sealed bottles, scrollcases, and barrels appeared all around the Kender.
Everyone decided to leave the Kender alone to his bounty, well alone, as in Dimension Dooring away and behind a very large rock. The Kender complained that everyone else was no fun all as he decided to open the containers.
There were strange sounds. . .then nothing.
The party decided to look.
The entire area where he was, was now scoured of all life, vegitation, and anything of value, as a shallow crater was gouged in the soil. All the mysterious packages were gone. . .along with the Kender.
Divination spells couldn't determine where he was or what happened to him. Even a Commune just got the one-word answer of "Gone" to the question of where he was.
We just carried on, writing the Kender off as a lost cause. He never was seen again.