...but not exactly cheap!
https://atelierdubricoleur.wordpress.com/2020/02/14/rolling-featherboards-peignes-a-roulettes/
https://www.amazon.ca/Magnetic-With...1824824&sprefix=magnetic+base,aps,228&sr=8-92
https://www.amazon.ca/RaceBon-Longb...a+wheels+inline+skates&qid=1581825075&sr=8-44
So...upwards of $70 Cdn for DIY. Still, a nice doable accessory.
https://atelierdubricoleur.wordpress.com/2020/02/14/rolling-featherboards-peignes-a-roulettes/
https://www.amazon.ca/Magnetic-With...1824824&sprefix=magnetic+base,aps,228&sr=8-92
https://www.amazon.ca/RaceBon-Longb...a+wheels+inline+skates&qid=1581825075&sr=8-44
So...upwards of $70 Cdn for DIY. Still, a nice doable accessory.