Frozen Erupting Snow. I don't think I would add the vinegar, leave it for them to play.
Frozen Erupting Snow
Tin Foil Art - vibrant, bright and EASY! -
Frozen Erupting Snow 1
'Frozen' Erupting Snow - a lovely sensory activity that your little Frozen fans will love!
Frozen Snow - can even explode if you'd like it too
Indoor winter fun can be excellent on a cold, wet day. Give this experiment a try to bring the outside in while staying warm. This is even better if you research why the snow expands when vinegar hits it.