i hope this is in forum rules:
i designed a component called a DeWidget that stabilises gas tank bags. it is a bushing with a strap mount that acts as a steerer spacer. It was expensive to have made, but the ones I had worked well and a number of folk reported no issues. As a result, the guy who turned down the original ones got the design on shapeways. I make zero money from it, but get a kick out of folk using them.
read about it here
https://drj0nswanderings.wordpress.com/2017/04/30/bentley-components-dwidget/ and here
https://drj0nswanderings.wordpress.com/2018/01/22/dewidget-update/and buy them at shapeways (based in USA and netherlands) here:
https://www.shapeways.com/product/RRUFHDLJY/dewidget-body?optionId=64527860&li=marketplace and
https://www.shapeways.com/product/HMU4TSFEQ/dewidget-shim?optionId=64528200&li=marketplace
