Unusual substances?

[arisumudvixen]

Aside from the usual suspects, (clay/mud/tar/quicksand) which substance would you way to find your way into?

[Herzeleid]

How about a huge tub of warm butter ?

[H8ms2014]

Industrial accident at a caramel factory

[joedeep130535]

ooblek, vat of custard,peanut butter,nutella

[groppingmire]

silly putty playdough ect

[DJlurker]

How the beans from beanbag chairs? Or maybe somehow sinking into a beanbag chair

[groppingmire]

silacon beads

[jadokast98]

Fluff. Marshmallow Fluff.
Either a huge vat with a woman sinking slowly, or a doll come to life sinking in an opened jar of it. Doable in a green screen format...

[triclopse]

bread dough

[muddypup]

giant vat of the water absorbing polymer