This plate design was made for a couple a children's bikes. The original design included names, but I modified that design to create a blank customizable plate.
To add a name to the plate, use the PrusaSlicer Text Tool to create a name in 1mm height :
Use filament switching to print the text and plate frame in a contrasting color.
The print consists of the Plate and a Holder. The Plate has a tab that fits into the Holder - this is a tight fit, but you can use an optional screw to hold the Plate in Place if you like. The Holder has a screw hole to allow you to fasten it to a bike fender or other location of your choice on the bike.
Print the plate and holder in PETG using the 3mf files provided; otherwise :
Print the holder oriented on it's side.
The Onshape 3D CAD files for this are here :
The author marked this model as their own original creation.