The issue you will have is making the front of whatever you concoct stay in place outside the baseplate.
If you're not fussed about looks, a good elastic band looped around the inner hook, then some way of holding it outside, either glue, or glue a tiny strong bar across the hole to tie the elastic band onto might work.
Sure our hosts will have a rubber part cheaper than a tenner though, although postage will make it a fiver regardless sadly