Canvas of any size (the flat canvases do work better than the stretched 3-d framed canvases)   Here is a link showing an example of the ones I recommend.  https://www.amazon.com/dp/B07G7GD6KB?pd_rd_i=B07G7GD6KB&pd_rd_w=sYfcb&pf_rd_p=51cf0d17-50cf-4c89-b1a7-606703cfac11&pd_rd_wg=w9hIP&pf_rd_r=V7A81CF98BVN5E4V8WXV&pd_rd_r=5046777b-2f38-43b9-8e26-54759d92bd0d

Acrylic paints of any color.   I recommend using at least 2-3 colors to make it more blended.   More colors is perfectly find also

A ziplock bag large enough for your canvas to fit in completely!  Students need to be able to seal the ziplock bag with the canvas inside it

Some kind of dog or cat safe soft food- peanut butter, cottage cheese, yogurt, canned dog food (non chunky), canned cat pate, ECT.

Tape- any kind should work, it's mainly to tape your ziplock bag smaller if it's way to big

And of course, they need their artist with them (their dog or cat)

Students will be using acrylic paint, this is washable off most surfaces if cleaned up right away.   It will stain clothes sometimes, so I would recommend them wearing something you don't mind get's paint on it.