If it's just to manoeuvre your bike around the garage one of these might work for you: https://www.ebay.com.au/itm/192892546899

I have one but have found it a bit too awkward to use in my single car garage as I have too much stuff in it... 

Could you Araldite the nut in position? 

A rivnut might do the job

You don't love your bike enough to buy her nice luxurious things!   

I do! Only the best for my baby...just ask Sue, she reckons I love my ST more than her... 
I even have a photo of my bike set as the wallpaper on my phone, much to Sue's disgust, as she reckons I should have a pic of her...   

Anyhow, getting back on topic, I just figure if, for example you paid $50 plus postage (which, knowing Australia Post, they would probably slug you
more than $10) for the 3D part and then you have to get it painted to match your bike then I reckon it would end up costing way more than the genuine part...