In the tub
The buddy solves the one real problem with open-tub slime, which is that it cannot come to bed. Everything is sealed inside a soft shell, so the squish is available without the cleanup.

Compound Kings kits, refills and glow toys
4.4 out of 5 · 18 ratings at the partner store
$14.99
Ready to ship · price last read at the partner store
A squeezable character filled with glow compound. Charge it under a lamp, turn the lights off, and it keeps working for the part of the evening when the tubs have gone away.
Texture, scent and the sensible way to live with it.
The buddy solves the one real problem with open-tub slime, which is that it cannot come to bed. Everything is sealed inside a soft shell, so the squish is available without the cleanup.
The glow is the usual phosphorescent kind: bright for the first few minutes after charging, then a long dim tail. Holding it under a bedside lamp for thirty seconds resets it.
Press the lid down after every session and keep it out of sun and off a radiator. Air is what shortens a tub's life; age is not. A stiff rim kneads back into the soft middle, and a tub that has set through is finished — water and lotion make it worse rather than better.