Vortex Tunnel Addition
I had this idea that I am sure everyone here has already had, but just in case, I will post it anyway. The vortex tunnel is perfect the way it is, this idea is meant only to spark that creative brain of yours.
I thought it would be interesting to hang luminescent ping-pong balls inside a vortex tunnel. Each ball would be attached to a black string (fishing string), and then to a rotating arm (like flying crank ghost). I can't tell you what the balls do without sounding perverted so just imagine it. The string would run up through the pipes and up through the top connectors.
I drew up an larger frame to show you what it might look like. With this same kind of frame you can channel fog, lighting, or anything. The frame should not be this big. Also, I thought hanging something here would be in danger of guests grabbing it but when people go through a vortex, the only grab the one railing.
Also, I would like to share one more idea. I think the walkway should be built of clear plexiglass. This should give your guests a clear view of the tunnel.
Or, have a rickety rope bridge. This can be accomplished by making the boards (old looking) then laying them on top of the plexiglass. This way people have to try very hard to walk on the boards to not fall through. Secretively, they don't have to be that careful, if they step in between, they will step on the plexy. - oh I like this idea.