Bed box storage and organization for long haul/ camping trips - ideas?

[DanTheMan]

I have been exploring ideas for box storage and organization for long haul/ camping trips. I would ideally have a rack that could hold jerry can, camping supplies etc. Solutions that fit under a tonneau cover are ideal. Anything from low to high budget. Any shared ideas/ pics are appreciated.

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[SCFast]

I have and use various pelican cases including the cargo cases and really like the Plano sportsman's trunks on the cheaper end especially once a seal is added for dust intrusion (cheap and easy modification)