-Cut the sleeve of a sweater (i used aprox. 15 cm)
-Cut two triangles for the ears
-Cut a long strip for the tail

Fold both ends of your sleeve and sew a hem (hope thats the right word in English ;) (± 1cm space for a cord later on)

Sew the ears/horns on the upperside

Sew the long strip and turn it right side out with a crochetneedle.

Pull the 'cord' through the lower 'hem'

(i always use a safetypin to do this). I fastened one side to the monster, other side free to pull (not sure if this is the best solution, open for suggestions :))

Pull a cord through the upper 'hem' and pull it tight. Turn your monster inside out, make a strong knot in the cord, and fasten this thing to it (what is this called in english?)

This hook is on the INside of your monster.

Give him some eyes :)

Clasp your keychain on the hook... (monster is inside out here)

Turn monster right side out and let him 'eat' your keys whenever you need them protected. Pull his tail to let him close his big key-eating mouth.

Omnomnomnom! I havemmmot seemmm any keeysmm..!