I've ordering a pump (12V 120W) to use in laminar flow water jet(s). Example jet:
I have in mind two or three jets / arcs, maybe illuminated. Hope it's not too ambitious, given the time frame!
For the June HB Arts festival, I'm not sure how to safely power this as a public, unattended display. It may not be do-able for that event. Perhaps we could have a tree on private land. Possibly have the kit padlocked inside an isolated box, chained to the tree. Or maybe we'd only be able to have it active during times when one of us was in attendance, (very time consuming ).
It would still be nice to do something (interactive?) for that event though, maybe with technology that had much lower, safer energy requirements.
Alternatively for the Open Studios event, 12 hours over a weekend is short enough for a couple of us to remain in attendance to ensure no one gets hurt. I can do at least one of those days.
Some more ideas for discussion...
Vortex water feature:
Dissapearing jar (in glycerin).
@Caz I've only just seen the Burning Man flame raking video you mentioned above. Did you find out how it was done, by any chance?