You can give a rabbit's foot to the truck next to the Jojamart for a permanent 0.25 luck bonus, you can eat things to boost luck, like the spicy eel dish for +1 luck and speed or Pumpkin soup for +2 luck, and obviously hit the mines or cavern on a very lucky day.
Personally, I like to prioritize killing dust sprites in the mines. If you kill 500 of them you can get a burglar's ring from the guild. It boosts the frequency of all drops, and everything has a miniscule chance of dropping a prismatic shard. It also makes farming coal from killing dust sprites very productive.
I just started a game where I got my first shard Winter year one from killing one of those buzzing bugs.
Boost your luck every way you can.
You can give a rabbit's foot to the truck next to the Jojamart for a permanent 0.25 luck bonus, you can eat things to boost luck, like the spicy eel dish for +1 luck and speed or Pumpkin soup for +2 luck, and obviously hit the mines or cavern on a very lucky day.
Personally, I like to prioritize killing dust sprites in the mines. If you kill 500 of them you can get a burglar's ring from the guild. It boosts the frequency of all drops, and everything has a miniscule chance of dropping a prismatic shard. It also makes farming coal from killing dust sprites very productive.
I just started a game where I got my first shard Winter year one from killing one of those buzzing bugs.