Golden Slime Casino time

Hey so its the first time im here with this new Golden Slime Casino thing. Just wondering, whats one of the few cool things i can get?
I know theres Slime lockbox but 1. they dont appear in my wheels, whys that? and 2. i know they give node slime sets (+weapon +shield) but aside from that, its another thing? Thx!

Thx! Just wondering if the different machines/wheels had differente "prize pool" cuz it happen the same to me, i tested every one and the animation only showed crowns and sometimes certain machines showed a kleptomalisk so maybe i had to see a lockbox in the animation to know theres a chance for me to get one. Didnt know if u should stay there (in the first machine i found) or just keep looking in the clockworks for one machine with a lockbox in the wheel animation
There are many different wheels with different payout mixes. I myself seem to encounter only crowns. But I insert the Golden Slime Coins that I've collected from monsters and get some 1000s of crowns and am happy.
To learn more, you might read the wiki page...
https://wiki.spiralknights.com/Golden_Slime_Casino
...and the Slime Lockbox research linked from it.