Cargo Bikes

I’ve got a similar setup with zip ties.

Actually thinking back, when I was in Bordeaux with work I dropped into this shop and they let me test their Muli- absolutely loved it! https://taalweg.com/

They also showed me a super cool click fitting for racks that secures eurocrates and child seats but I can’t for the life of me find it online. I’ve dropped them an email and will update 🫡

Washers with nuts and bolts.

Or if you need more support / strength, the a flat bit of metal with holes, then washers, nuts and bolts.

When I was searching for an image I noticed universal roof box fixings. I've got some of these for my roof box and thinking about it, they would be a good shout as the plate is nice and thick.

Small ratchet straps, Aykasa crate- it’s got small slots which mean the straps are quite well hidden inside, it’s very secure and I’m not sure the average opportunistic thief would work out how to undo it from the cargo bed in time

mine are from decathlon but unsure if they stock them anymore, found them on Debhenhams website https://www.debenhams.com/product/decathlon-decathlon-tightening-strap-kit-2-x-3-m_p-3cc52ebe-6d7b-4c7d-a8df-6088d6083557?colour=Black&size=One+Size&istCompanyId=76f7277d-6e78-4dc2-aaff-1eb77fae16b0&istFeedId=258a4886-8f3c-47ef-9369-d1eda8d84501&istItemId=mrtwxliwq&istBid=t&gad_source=1&gbraid=0AAAAABevdS5Kz2GN-AWmzfDMLb5xVntJx&gclid=EAIaIQobChMIrJifsqXfiQMVLJJQBh1VeAAZEAQYBiABEgI1BvD_BwE&gclsrc=aw.ds