Adds some stuff from the game Undertale:

Weapons and armors:

Toy Knife (can be found in mineshafts and ruined portals)
Faded Ribbon (can be found in mineshafts and ruined portals)
Tough Glove (can be found in igloos and bought from leathersmith)
Manly Bandanna (can be bought from leathersmith)
Ballet shoes (can be dropped by a special bushes found in underground lush caves and dripstone caves)
Old Tutu (can be found in a buried treasure)
Torn Notebook (can be bought from Gerson)
Cloudy Glasses (can be bought from Gerson)
Burnt Pan (can be found in nether fortresses, bastion treasure chests and in special lab structures)
Stained Apron (can be found in nether fortresses, bastion treasure chests and in special lab structures)
Empty Gun (can be found in a trashbag from fishing)
Cowboy Hat (can be found in a trashbag from fishing)
Temmie Armor (can be bought from Temmie)

Item's abilities and statistics can be seen by reading that item's description.

WARNING: Undertale items CANNOT be enchanted. Trying to use an enchanted item will remove enchantments from it.

Mobs:

Gerson (can be found in a new underground shops)
Temmie (spawned by dropping a Tem Egg on the ground for some time)

Structures:

Gerson shops (found underground or spawned by a Turtle Compass)
Bushes (found underground)
Lab (found in the nether, contains Burnt Pan and Stained Apron)
Ender Core (found in the end, contains 1 multisoul)

Trashbags:

Trashbags can sometimes be found while fishing. They can be opened to get one of this items:

Some Junk Food (30% chance)
Dog residue (20% chance, Right Click dog residue to get more and potentially get a dog salad)
Empty Gun (20% chance)
Cowboy Hat (20% chance)
Tem Egg (10% chance)

TRASHBAGS COUNT AS FISHES! Which means that Luck of the Sea will DECREASE a chance of getting one.

Multisouls:

Found in the end, they can be right-clicked to choose 1 undertale armor or weapon (not including Temmie Armor). The multisoul will be converted to that item.

Bonuses:

There are also some bonus items (for example temmie village disc) which can also be bought from Temmie or Gerson, or by opening trashbags)

Disclaimer: This mod was made for fun and most likely won't get any updates

Pack of things from Undertale