Wanted: window winder handle, with a knob that isn't already wobbly, weak and about to fall off!

[mrtask]

Only a few months ago I pulled the round rubber knob off my drivers door window handle. I found a replacement handle on ebay, but it was already fairly wobbly when I opened the package, and unsurprisingly the round knob came off in my hand again the other day.
Does anybody on here have a good one going spare that they'd like to sell me please?