On evolutionary lines of held items

Choice Items:

1. Wise Glasses->Choice Specs
2. N/A->Choice Scarf
3. Muscle Band->Choice Band

Abilities as Items:

1. Mental Herb->Oblivious/Aroma Veil
2. Absorb Bulb->Storm Drain
3. Grassy Seed->Grass Pelt
4. Razor Claw/Scope Lens->Super Luck
5. Lagging Tail->Stall
6. Focus Sash->Sturdy
7. Air Balloon->Levitate
8. Float Stone->Light Metal
9. Eject Button->Emergency Exit/Wimp Out
10. Bright Powder->Sand Veil/Snow Cloak
11. Rock Helmet->Rough Skin/Iron Barbs
12. Smoke Ball->Run Away
13. Safety Goggles->Overcoat

Moves:

1. Amulet Coin->Happy Hour
2. Honey->Sweet Scent

Gimmicks:

1. Elemental Gems/Plates->Z-Crystals
2. Evolution Stones->Mega Stones

Pokémon Specific Items.

1. Memories->Plates
2. Type-enhancing items->Timespace Orbs+Soul Dew

Miscellaneous:

1. Power Items<->Macho Brace
2. Repels->Cleanse Tag
3. Soothe Bell->Luxury Ball
4. Wings(Except Pretty)->Vitamins(Except PP UP/Max)

Individual Evolutionary Lines:

1. Tiny Mushroom->Big Mushroom->Balm Mushroom
2. Nugget->Big Nugget
3. Stardust->Star Piece->Comet Shard
4. Pearl->Big Pearl->Pearl String
5. Relic Vase->Relic Band->Relic Statue->Relic Crown
6. Relic Copper->Relic Silver->Relic Gold
7. Thick Club->Rare Bone
8. Potion->Super Potion->Hyper Potion->Max Potion->Full Restore
9. Status Healers->Full Heal
10. Revive->Max Revive
11. Energy Powder->Energy Root
12. Berry Juice->Fresh Water->Soda Pop->Lemonade->Moomoo Milk
13. Ether->Max Ether
14. Elixir->Max Elixir
15. Oran Berry->Sitrus Berry
16. Poké Ball->Great Ball->Ultra Ball->Master Ball
17. Bottle Cap->Gold Bottle Cap
18. Shards->Plates

Item crafting:

1. Shoal Salt+Shoal Shell->Shell Bell
2. Apricorns -> Apricorn Balls