New NPCs called PokeStop, looking like clowns, have appeared. They give a brief description of the place they are, then give free items. This is a list I made of their location and the items they gave me. If you have different items or find other PokeStops, please let me know so I can update the list.
(because I'm a moron, I don't have a screenshot of the NPC nor a few unsignificant items from them)
Viridian gym, revive+?
Viridian forest lobby, ?+?
Pewter museum, potion+great ball
mt Moon pokecenter, super repel+ether
Bill's house, rare candy+pokeball
Vermillion port, great ball+ether
Diglett cave Vermillion entrance, pokeball+great ball
Cerulean Cave, rare candy+?