Monkeys, and all other pets/constructs or mesmerized creatures that don't detect b/u/c, (blessed/uncursed/cursed status) can remove any cursed item after it is equipped.
This is even better than cats' and dogs' b/u/c identification, as it identifies the -2 Helm of Brilliance or -3 Gauntlets of Dexterity you normally would not have put on once the cat or dog identified it as cursed.
- Get a door between you and your monkey (or whatever else).
- Drop the item in question.
- Tell your monkey to fetch the item.
- Close the door.
- Equip the item.
- Open the door.
- The monkey will steal the item off of you, cursed or not.
This can also be done without the door, the door just gives you time to equip the item.