Why Cardboard? Cheap, Fast, and Tactile
Here’s a secret about van builds: the most expensive mistakes happen before you start building.
You draw a layout on paper. It looks perfect. You spend three weekends and $800 on plywood and hardware, install everything, and then realize the bed is 4 inches too short. Or the kitchen is on the wrong side. Or the seat you planned for four actually fits two, uncomfortably.
We weren’t going to make that mistake. Before we cut a single piece of wood, we built the entire van interior out of cardboard.
Total cost: about $20 in cardboard boxes from the local hardware store. Total time saved: incalculable.
Why Cardboard Works
You can feel the space. A CAD drawing tells you dimensions. Cardboard lets you experience them. You sit on the cardboard seat. You reach for the cardboard cabinet. You realize the countertop feels cramped, or the walkway is wider than you need.
You can iterate fast. Cardboard is forgiving. If something doesn’t work, scissors and tape fix it in minutes. No wasted lumber. No lost weekends.
Everyone can participate. Our daughters helped build the cardboard mockup. They had strong opinions about where the bed went, how the kitchen felt, where they wanted their stuff. You can’t get that input from a spreadsheet.
It forces hard questions early. When you’re drawing on paper, you can wave off problems. When you’re building in cardboard, you have to decide now.
The Process: Galley as the Anchor Point
We didn’t start with the sleeping area. We started with the galley, because it’s the anchor that everything else builds around.
You’re awake for 14-16 hours a day. You sleep for 8. Get the galley wrong and you’re miserable. Get it right and everything falls into place.
After an hour of cardboard testing between driver-side and passenger-side configurations, the answer was clear: driver side, L-shaped, spanning the rear quarter of the van.
The Revelations
The countertop was too shallow. Our drawing showed 18 inches. Reality? Anything less than 24 inches made food prep feel cramped. Caught before building the real thing.
The fridge door swing was wrong. We assumed the fridge would face forward. Cardboard testing showed side-access worked better. One cut, one tape, problem solved.
The upper cabinets would feel claustrophobic. Full-height uppers made the space feel like a tunnel. We scaled back before committing any wood.
What We Discovered vs. What We Assumed
The bed: We planned a fixed platform. Cardboard revealed the kids would outgrow it in two years and accessing under-bed storage meant crawling. Revised to a modular convertible system.
Storage: We planned full-length overhead cabinets. Cardboard made the space feel like a submarine. Revised to selective upper storage in the galley only.
Seating: We planned sideways bench seating, standard campervan layout. Sitting on cardboard for an hour made it obvious: sideways works for short trips, not hours of highway driving. Revised to forward-facing seats.
The pattern: what looked good on paper felt wrong in practice. Cardboard doesn’t lie. Your body knows. The space reveals its truth when you inhabit it, even temporarily.
Trust But Verify: The Final Lesson
After weeks of cardboard testing, we took it all out. Photos archived. Van swept clean. Then we started fresh with measurements we knew were right.
When we finally cut real plywood, we knew exactly where each piece went. No guessing. No mid-build adjustments. The build became assembly instead of experimentation. We’d done the experiments in cardboard.