pokémon

• Jigglypuff ~ Safari Zone - Meadow, Safari Zone - Swamp, Route 3, Route 4
• Eevee ~ Meet Bill at the Pokemon Center in Ecruteak City → visit his house in Goldenrod City, he'll be at home and give an Eevee. Make sure it's female!
  • Vaporeon ~ Evolve Eevee with Water Stone
• Lapras ~ Union Cave B2F using Interact, Safari Zone - Rocky Beach using Surf
• Gyarados ~ Mt. Silver 2F using Super Rod, Fuchsia City using Super Rod, Seafoam Islands B4F using Super Rod
• Poliwag ~ Route 30, 31, Violet City, Ecruteak City using Surf

items

• Surf HM ~ Beat Rocket Grunt messing with Kimono girl in Ecruteak City
• Good Rod ~ Olivine City → House → Fisherman (Johto)
• Super Rod ~ Silence Bridge, Route 12 → House → Fisherman (Kanto)
• Water Stone ~ Bill's grandfather, Fisher Tully (Route 42), Bug-Catching Contest first prize, Seafoam Islands, Beyond the Sea, Pokéathlon Dome