ISO a few items for a 24-hour fundraiser (4/18-4/19) we are hosting at the animal shelter I work for. Hoping to obtain stuff for free to reduce the cost/impact on donations.
• about a dozen or so small canvases (a variety of sizes or all the same size), ideally the non-stretched kind (pic for reference). we are going to be 'painting' with animals and they may puncture the stretched kind
• a dozen or so large ziplock bags (large enough for the canvases to fit in it)
• brightly-colored water-based paint; open/used/unopened all good
Thank you so much in advance! **cross posted**

Art supplies for a fundraiser (Gaithersburg)