Anyone know what kind of basin Stella is using in the video?

https://stellas-store.umd.net/download_info/fluff-tub

I don't know but I'd like to

Dosnt seem like store bought marshmallow fluff which I used seems more concentrated but I could be mistaken

Search for stock tank they are used on farms to provide drinking water to live stocks . They come in many shape and size

Rubbermaid Commercial FG424288BLA Structural Foam Stock Tank, 100 Gallon Capacity, 53" Length X 25" Height, Black https://www.amazon.com/dp/B007IAFCC6/ref=cm_sw_r_cp_api_i_AVPGEBY3DJXQA2GSHY4F