Shell of a walnut, a 10 cm square cut out from thick cardpaper, some strong glue, felt pens and a pair of scissors.
1)Stick the walnut shell on the card paper with its dome side up. This would be the body of the tortoise.
2)Draw legs, head and tail and colour them to match the walnut shell.
3)Cut along the outline and your nutty tortoise is ready for display. You could tie a string round its neck and have hours of fun dragging it about.