Art/crafts supplies for kids camp (Southall UB2)

I am a teenager volunteering as an Arts and Crafts teacher at a local kids summer camp.The camp flyer promised activities like beaded jewelry, yarn dream catchers, pompom monsters, and slime making. However, the people running the program only provided us with card paper, crayons, and coloring pencils, telling me to 'improvise.' The kids are already bored of coloring after just 3 days! The company will not reimburse me if I spend my own money.I really want these kids to enjoy their summer. Any donations of beads, wool, yarn, googly eyes, buttons, slime ingredients, or anything else crafty would be so deeply appreciated. I can collect locally in Southall by bus. Thank you so much!