I made this manger to go with the Jesse Tree that didn't happen (yet) and the advent calendar with the tiny story books. Each day we read a new little book for the advent calendar and put a piece of hay (yarn) in the manger to prepare for Jesus' birth.
I used mini and regular popsicles to make the rectangular manger. I just used craft glue for the base and sides. Then to make the sides stay in place, I used hot glue.