i have tried the tube thing and my lovies hate it they all sleep in huts but after reading i got scared would it be safe if it wasn't sewed
i used to make blankets like this and was thinking i could make huts like this too
you take felt about an inch bigger than you want the actual size to be and cut all the sides in about an inch in 1 inch sections to where it looks like fringe sorta but thicker then you put the pieces together by tying them

that way there aren't any strings to get caught on i used to make all kinds of stuff like this for my sugar gliders you can also make tons of toys like this to

http://familycrafts.about.com/od/nos...cetieblank.htm