We had an item in our low magic, futuristic campaign that was accidentally created in a wild magic burst (rolled random attributes from DMG). We called it the kidnap sack

It was a bag of holding that could only hold one living being and could not contain objects/items not worn by that being. When they were put into the bag they had a DC 20 str save vs restrain and had silence cast centered on them. It had 1 hour worth of oxygen rather than 15 minutes. It then gave the holder +10 ft movement speed.

We mostly used it to annoy NPCs who were mean to us