So I was at the current jelly gate, the Ruby knight gate, and there was this box near the party button.
It said to give 5 energy, and I did.
And then the box turned in a turret, then when we stepped on the party button, a bunch of spiked jellies spawned in a box, then shot a bunch of blue lasers at the jelly.
I believe it was aurora isles jelly farm, not sure which jelly farm though.
Here's some screenies :D
Been there for ages, sorry to burst your bubble.
But I have to admit, although not entirely practical, they ARE a whole ton of fun to use.
would be better if it was a usable turret though :D