heres a tutorial on making balsa poppers but it should be the same for foam poppers.
http://www.peninsulaflyfishers.org/F...s_poppers.html
even janns netcraft has a tutorial for cork and foam poppers
http://www.jannsnetcraft.com/Content/cork_poppers.htm
heres what i do when i use GOOGLE or BING. type in "making foam poppers" and you will get this:
http://www.bing.com/search?q=making+...=n&adlt=strict
then i search the sites for what i need
there is also a "search" function on this website that should get you some instructions on tying "dremel bugs" or something like that.