2 litre bottle filter insert

For a child's science fair project, we made some pieces to help make a standard 2 litre soda bottle a bit more useful.

Punch out more or less of the holes for more or less filtering and water pass through.

I copied the holes from one of the recent designs on thingiverse. Didn't feel like making a bunch of holes if someone else has already done it. I cannot seem to locate it now. I apologize for not listing the remix attribution.

Have a great day.
Bill