Bag of holding
A bag of holding is one of the most coveted items in NetHack. Placing items into a bag of holding makes them weigh less; the effect is that you can carry more items.
Bags of holding cost 100, while normal sacks cost 2. Since bags of tricks are easily identifiable, this makes them easy to identify. A bag of holding is sometimes at the end of Sokoban.
A blessed bag of holding makes items weigh 50% less; uncursed, 25% less. A cursed bag of holding, however, makes items weigh 50% more and may cause items to disappear when placed inside.
Some items should not be held in a bag of holding and may make the bag explode. These items are |bags of tricks, wands of cancellation, and other bags of holding. The first two are straightforward; the wand can be trickier. To be safe, do not put any wands inside the bag that make engravings disappear (this includes cancellation, [[wand of teleportation|teleportation, and make invisible.)
