We just wedge them in somewhere never had good luck with the epoxy or the super glue.. just end up with my fingers stuck together and frags stuffed in the most convient place!
for the softies a rubberband works pretty well. I did see some instructions somewhere about rubberbanding them down then using a small clear plastic cup or tupperware with holes in it to cover them. I think it said for some you just have to put a rock in w/o the rubberbanding and cover. After a bit it will attach on it's own.
Good luck