Does anyone have any good (and cheap) ideas for activities, games or toys to make my garden more fun for my two pre-teen DC this winter? I just want them out there as much as possible between online learning sessions... It's a medium size but quite boring garden with a swing they like and a small climbing frame they've outgrown. They are not hugely interested in gardening. So far they've enjoyed filling the bird feeder, drawing on the walls with chalk, bubble wands, skipping ropes, football...