enjoy wrapping sticky tape around their wrists and adding bits and pieces as they walk along. you would have to do this over their coats, but it still works.
build a den: head to the woods and make a den with whatever you can find. take an old blanket with you and maybe some books, a torch or lantern and hot chocolate, so when you’re done you can snuggle up with a drink and share a story. even better if it’s one you can act out to get you all running around!
set up a treasure hunt! you could do this in the woods or in your garden, writing clues and setting 