its very interesting tap.and this is so creative tap..only use the small box and pencil and colour paper
take plastic round box of 2" dia. make a hole on both side. make thin slit in middle of box to pass the tape.
take pencil 4" long. first stick the measure tape in the middle of pencil.
take thermocol sheet and cut round piece (2nos) ; make a hole in middle of thermocol.
put 1no of thermocol piece in the box. insert the tape from inside to outside of box. stick thin card at the bigining of tape with cello tape. now put 2 nd piece of thermocol on the pencil and close the lid.