I made I did a little experiment over the weekend because the hot tub at my gym was closed and I already wanted to take a warm relaxing bath.
I had a cannister of J-lube and I was curious how far that would get me with a bath. I was pleasantly with the milage that I got out of it, and how relatively simple it was to clean. Fair warning, keep towel near by so you can wipe slickness off as you need it. Do NOT try to stand up in the tub, and salt really DOES help to break it down, albeit slowly.
So I posted a couple non-explicit shorts of what I got out of it in the hopes that those of you who wanted to make "slime" or "gunge" would be encouraged and not feel that you need a gajillion dollars/pounds etc. Granted, if you want THICK, you're going to have to spend a bit more to fill a bath, but it's quite doable.
Stay messy my friends, (and also safe, no falls please!)
Edit: doesn't look like the short vids posted here. I'll check back later, and see if that I cannot add here, I can on my profile page.