I have never used them but they look fun! I don't have $ to buy things like this any way. When I run out of glue or something important I have to scrape to get more But I can usually make something else work to achieve what I wanted to begin with. Glue is a necessity for me tho, otherwise I have to revert back to Elmers which is more messy...ew!!
I hope you will make something and show us what you made with these! I will check out the videos tonight and see what they are all about(I can't watch them till after 11 PM or I will use up the man's download time and slow our internet down )