The desk idea is a very interesting!
Ask your body shop and see if it's fixible. The body shop may think it's cheaper, faster and easier replacing the bumper than fixing it.
2015 Cayman S
Gone but not forgotten:
2006 2.0T A4 Avant, 2007 Z4 Roadster 3.0si, 2006 M Roadster, 2013 550i M Sport