Looking for a black knob! FZS600 indicator switch

[Tierbirdy]

As the title says I need a black knob! (Ive got no idea what the part is actually called and Im well immature )

So I got on my Fazer thismorning and stabbed myself in the thumb when I went to put the indicator on at the end of the road, turns out this bit has somehow fallen off and disappeared into the void. The actual switch/metal pole bit is still there, its just the plastic cover has fallen off.

https://i.imgur.com/yogrrXt.jpg

Local bits shop says they arent sold seperately and my only choice via them is to buy a whole new switch assembly which I aint doing!

So does anyone happen to have a spare switch assembly lying around or breaking a Fazer that they could salvage the knob from?