adhesives help

[valadbunny.livejournal.com]

OK so I have looked thru adhesives,yarn and a few other parts of the memories but I didnt see what I need.Maybe you guys could help me. ^.^

I need to use some type of "glue" to hold felt onto yarn.What im doing with it is linning a box that I have made using plastic canvas and yarn.
Behind the cut is a pic of the box and the part that I want/need to cover up.
Top looks nice!Inside of top looks bad.Thats where I want to apply the felt.But it needs to be "glued" in place some how.

Any help would be great!!!TY