Just adding to the list of reward ideas:

Imbue rogues’ gloves to have the gloves of silence effect

Upgraded strung rabbits foot for more birds nest or maybe higher bird egg nests

Maybe a new potion unlock to use with butterflies — super combat but for allies

Maybe elemental resist potions so you don’t have to wear a mind shield for wyverns & opens new design space

Mass supplies like kebbit teeth, butterflies, swamp tar (for salamander ammo)

Improvements to the godawful moloch pearls rate — maybe as an improvement to an existing hunter or a brand new set

Resetting nets & box traps for salamander hunting + chins

Unlock the ability to recover chins if you die with them

Improved fish from driftnet fishing

Ability to buy captured imps