Store by mess and risk
Small cabins work better when storage is grouped by what can get wet, what can damage other things, what needs to stay dry and what has to be reached quickly.
Useful zones
Plan a wet entry zone, a dry food zone, a tool and repair zone, everyday shelves and a place for bulky outdoor kit that does not block escape routes or ventilation.
Practical rule
The best storage idea is the one that still works when people are tired, wet and carrying too much kit.