Which ones have your children done? Which ones did you do before you were 16 and which ones have you done since?
1 Make a natural shelter and sleep in it - make a den from wood and leaves and sleep under the stars.
2 Cook on an open fire - toast marshmallows, bake potatoes and enjoy an outdoor bonfire feast.
3 Make a go-kart - and then test drive it!
4 Use a sharp knife - teach children how to handle a sharp knife carefully and safely. Teach them how to handle it correctly. Try whittling sticks from the age of 6 onwards.
5 Climb a tree - something we all used to do as a child but our children perhaps do less often. Let them clamber!
6 Make a mud pie - all kids LOVE mud - make a muddy corner of the garden for them to squelch, squish and play in.
7 Get soaked to the skin - obviously not in freezing weather! But it feels so fab to really get soaked to the skin.
8 Dam a stream - pick stones and pebbles and sticks and mud to dam a stream.
9 Read a map - whether it's orienteering, a road map or a simple drawn map - let them find their way.
10 Track a wild animal - Early morning and early evening are the best times to try to follow animal tracks.
11 Climb a mountain
12 Skinny-dipping/wild swimming
13 A bonding weekend with one parent
14 Learn basic first aid
15 Learn to sail
16 Build something out of wood
17 Grow your own dinner - start with herbs and easy things like tomatoes and cucumber. Grow carrots, potatoes and berries...
18 A night picnic - Darkness can make the most otherwise mundane activities exciting
19 Learn to walk a tightrope - start with a kerb then try a low rope
20 Make a Mentos and Coke rocket - unleash the scientist in your children.