fairy soup - happy hooligans - outdoor sensory activities for kids. This is also a free activity you could consider mentioning to parents; a trip to the local park and then play at home. Also called a messy mixture, or "perfume making"
DIY Drawing and tracing using shadows: great craft/art for kids too. "Nature and shadow- what if we take out the paints and paint in the lines…."… great idea for tracing. Take a quick pic then don't have to worry about sun changing places.