I'm not 100% happy with the final outcome but I think there's some mileage in it

Take one Chinese carbon handlebar extender jobby off ebay
IMG_1222 by Shewie, on Flickr

Dismantle, measure the carbon pole and cut in half
IMG_1223 by Shewie, on Flickr

Cut majority of small ring away, leaving a wonky nut of sorts
IMG_1224 by Shewie, on Flickr

Smooth off the cut ends
IMG_1226 by Shewie, on Flickr

With a bit of luck the carbon pole should slide on nice and snug, with a tight fit at the wider clamp
IMG_1227 by Shewie, on Flickr

IMG_1228 by Shewie, on Flickr

The cheap clamps are a bit crap, I might try another wrap of tape or line the clamp with something else. The wonky nut could be replaced with a bit of half round timber, or sugru etc.

Thought I'd have a go for a laugh, i was never going to use the bar extender as it was

This looks like an accident waiting to happen.

Nice work. I have the same bar and have been considering something similar. I mentioned on another thread that one option I was thinking about was cutting a section out of the middle of the loop so I could put any old bar end on.

ripio wrote: ↑Mon Oct 12, 2020 6:05 pm This looks like an accident waiting to happen.

Probably

Are these 'carbon' handlebar extenders not just actually plastic with a carbon fibre pattern printed on them?

The one I picked up is definitely carbon, I think it's fairly cheap to produce in the far east these days

Shewie wrote: ↑Mon Oct 12, 2020 8:03 pm The one I picked up is definitely carbon, I think it's fairly cheap to produce in the far east these days

It must be, have you seen any Planet-x bikes lately..