All you need is an empty soda can and a pair of everyday scissors . Wash the remains inside with some water.
Cut the top of the can , all around the metal surface, close to the edge.
Cut 16 strips , that should be even. To manage this, try to cut in the middle in two equal pieces first , then each one in two even pieces that is four, then eight and finally sixteen.
it looks like a flower !
Take one strip and bend over the first next one. Hide the end underneath the 2nd strip.
Here you go ! Your ashtray is finished !!
This was an example with 16 stripes. You can cut more or less than sexteen stripes, the important is to be even.