Crabbing really is a shore way to amuse youngsters
Go bird watching:
You'll need to find a place where birds like to fly or search for food with a quiet spot to sit and hide and don't forget a pair of binoculars and a camera.
The Plym Valley in Devon is a good place to start – home to a natural site for nesting peregrines, using telescopes and a webcam visitors can see the young chicks up close as they grow up and fledge. It is the only site of its kind in the South West.
At St Just and Cape Cornwall you should be able to spot a variety of birds in sheltered Cot Valley – look out for a number of different kinds of gull and some rare waders.
Find your way with a map and compass
To get started with this activity you'll need a map, a compass, a whistle to let people know where you are and, of course, you need to decide on a destination.
Baggy Point in Devon, with its crashing waves and dramatic cliffs, is the impressive headland at Croyde – one of the best surfing beaches in North Devon. And when you get there you can borrow a tracker pack to help children to learn how to use a compass and have fun with it.
Killerton House near Exeter is also an ideal location to get to grips with a map and compass while you explore the vast parkland, forest and countryside.
Boscastle in Cornwall is also an ideal place to plan your own trail. You could use the National Trust visitor centre in Boscastle harbour as your starting point.
Catch a crab
You'll need some string or a crab line, scraps of bacon or fish for the bait then all you need to do is find a good spot by the sea and get settled. You might also want a bucket of water if you'd like to take a closer look before you put them back.
Tie a stone and the bait to the end of the string so it sinks properly. When you feel it tugging pull the string up at a good pace – too fast and the crab will fall off, too slowly and it will eat all the bait.
Be very careful when you pick them up (they're not afraid to use those pincers) and then put them back in the water.
If you do decide to go crabbing do think about making your crab line eco-friendly.
Instead of the hook tie on a washing detergent tablet bag – the crabs will cling on to the bag to try to get the bait without getting hurt on a hook.
The Bude to Morwenstow part of the Cornish coast has some perfect beaches where you could find a crab to catch. Try looking in the rock pools at Sandymouth.
Porth Saxon beach is also a good place for catching crabs on the North Helford coast in Cornwall.
While walking along the South Devon coast pop down to a beach along the way, like South Milton Sands or Branscombe to hunt for crabs – it shouldn't take too long before you get a bite.
You can find out all about 50 Things To Do Before You're 11¾ at the National Trust's blog NTSouthWest.co.uk and you can download the Wild-time Challenge Pack, and details of all the Trust's events in the region are online too, visit nationaltrust.org.uk/visit for details.