On Monday, 16 February 2015 17:44:08 UTC, Davey wrote:
I reckon there is a market for something like a thin version of the
chip shop frying basket, so that these items can be hung in place and
then retrieved.

There is, but don't bother writing in to Dragons' Den as it's already been done.

http://www.dualit.com/products/original-sandwich-cage

Owain