A friend of mine is (slowly) renovating an old VW camper van.  It’s quite rare, apparently, to find an original radio that still works, so it’s fairly common to buy a non-working example from one of the various internet sources and use it to fill the gap in the dashboard where the radio should go.  Hence, a “dashfiller”.

This one is slightly the wrong vintage for the intended ‘van, so it’s going to be up for sale soon.