This is going to be a fun "extra" project for the summer sometime.....

Battery is being clamped down in there and I plan to run tyre-weld instead of a spare (might take a spare on real long journies just in case of a blow-out)

Soooo, imagine a battery clamped down in the boot - I want to create a kind of structure to be able to keep bits & bobs in there - essentially this structure will need an outside of a similar size to the outside dimensions of a tyre (for obvious reasons.....) and then somehow portion into 2 small half circles allowing for the battery to sit in the middle.....

Any thoughts? Almost thought about hacking a slick 205/40 R17 I have here, but think that would add too much weight. Would like to keep it down a bit.

I know someone who did something similar - battery and other electronics in the wheel well.

They used just used filler foam in a black bag so that it formed around the items without sticking to them or the wheel well.

Do you know anybody that can Fibreglass?

Do you know anybody that can Fibreglass?

Not sure I want it that posh, but its an idea. Would still need a basic structure to mould around, and I think you're thinking like me, a tyre could be used?

This is my amateur mock-up in paint It will be a lot busier, but the frame in blue is what I want to try and create. I may end up just installing battery, pad around it, coat the sides of the wheel well in something plasticky/foamy, and just shove stuff in.

that looks a canny badge design for front grill...

Not sure I want it that posh, but its an idea. Would still need a basic structure to mould around, and I think you're thinking like me, a tyre could be used?

Put a large bin bag in to the wheel well and mould your fibreglass in to the bin bag.

You wont get a better fitting unit than a replica of the wheel well.