Place 3 blackberries in a small bowl and mash completely with a fork or back of a spoon, releasing lost of lovely blackberry juice.
Use a new clean paint brush and paint a spiders web onto a large white plate using the blackberry juice. Place some blackberry ‘spiders’ onto the web.
To make the legs, cut the grapes in half lengthways, then cut into thin slices. Add eight legs (slices) to each blackberry and suddenly you have a giant spiders web full of delicious juicy spiders that your children will devour in minutes!