Sure. Wood can be good for the MB backing and serve the outside also. There are kingserts and blind hole plugs for the stays.

Fixing BMW saddle bags I got pretty good with a plastic welder (I've been a welder). With molding and stamping tools (things that work are called tools!) and a crafty hand you can be your own 3D printer. I've made many shrouds and cooling guides and mounts with these techniques. Since this can be springy pieces you can fashion them to 'clip on' and 'snap in'.

Blank pcb board is very cool to work with, braze or solder subsections like device cages etc. Large format would be expensive, very cool, and strong. I used this way to make my double-din truck computer. It can part of the circuits if you'd like, and also a noise cage.

Combine all the techniques for something beautiful and unique worth at least a conversation.