You can command pets to come towards you, and also command them to stay in place until summoned.

Vampires can’t step onto sinks, because they “can’t cross running water”.

An artifact boomerang which is a guaranteed first sacrifice gift for Archeologists.

Allow edged weapons to be applied to force open door locks. (They can break in the process of doing this.)

Wands of digging kill any monster made of earth instantly.