I honestly didn't expect much more than consumables for not having to lift a finger to get free stuff. i wouldn't really complain too much.

I have gotten a few nice consumables, such has hyper ethers and potions. The goblin teased me with the possibility of getting a nidhogg pop item, so it's not to say there's no possibility

it strikes me as something like the gachapon in several korean free to play games. you usually get garbage, but if you're really lucky, you can get something nice.

Besides, it's not like potions are entirely useless and unwanted.