Some trees have spaces big enough to get inside. Others can be climbed. Many have vibrant summer flowers or colourful autumn leaves to catch. Get to know a tree and see what creatures they are home to - it's No. 1 on our list of ‘50 things to do before you’re 11¾’.
Build a den out of sticks on a flat spot in the woods, cover it with leaves, and you've got a pirate hideout or a meeting place for spies. There are loads of National Trust places with perfect spots for den building.
When it comes to creating wild art, the only limit is your imagination. What will you use, and how? There's so much to choose from in the natural world, but make sure you're not making your art from another creature's home.
Ladybirds, spiders, caterpillars, woodlice - there are all kinds of creepy crawlies hiding at the places we look after and you can tick off No. 31 on our '50 things to do before you're 11¾' - making friends with a bug.