For stripped non critical screws/bolts, I usually just insert a small nylon cable tie thru the cover and into the threaded hole and insert screw. Then snip off excess if it doesn't cut/pinch itself off. Works great on coarse plastic screws.
I have also used a piece of small guage insulated wire, same deal.
It ain't rocket science!
'Course if yer house has more wheels than yer truck...
" Old age ain't for sissies "