The problem was that this rather expensive bow rattled around inside the case and the owner was worried that it could be damaged. So we cut the foam to size and the cut the objects out of the foam after tracing around them. It is of course really simple, but it looks really professional and if the case is dropped, the bow will be fine.
The foam is cut after tracing around the objects.Simple!
Then we just glue the foam in place using a spray adhesive.