Back again with the updated list for Scarlet/Violet players interested in this.
Shared Codes:
L1KEAFLUTE - Cetitan - August 31 2024
SWEET0RSP1CY - Sweet (1/3) or Spicy (2/3) Herba Mystica - September 30 2024
TEAMSTAR - Revavroom - October 31 2024
SEEY0U1NPALDEA - Gimmighoul Chest - November 30 2024
WEARTERASTALCAP - a fucking hat - November 30 2024
SUPEREFFECT1VE - Expert Belt - February 28 2025
G0TCHAP0KEM0N - 30 Quick Balls - February 28 2025
NE0R0T0MC0VER - DLC Area themed Rotom Phonecase - ???

Gift via Internet:
Master Ball - January 03 2024
10 TM223 (Metal Sound) - January 30 2024
DLC Area Eventmon - Yes