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Episode 3: Minivan Camper Bed – A Versatile Bed, Sofa and Lounge for a Toyota Sienna

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I designed and built what might be the most versatile bed in any minivan camper build. It fits the compact space of my Toyota Sienna, comfortably sleeps two, offers storage underneath, and switches between bed, sofa and lounge modes. It even serves as an outdoor table.

Tri-fold foam mattress with a grey mattress protector laid flat in bed mode on a plywood platform in a Toyota Sienna minivan camper
Bed mode: a tri-fold mattress on a three-section plywood platform.

Starting With the Mattress

I wanted a 6-foot bed, as wide as possible for two people, with a foam mattress at least 4″ thick. I built around a tri-fold 4″ mattress from Amazon. It would not fold into lounge mode, so I added 4″ inserts between the sections so the head and foot sections fold either way. I also trimmed the width from 52″ to 50″ so it doesn’t get stuck between the van walls.

Platform, Frame and Anchoring

The platform has three 24″ sections of 1/2″ plywood joined by lift-off hinges, with 1″ holes to ventilate under the mattress. Instead of a 2″x4″ frame, I built a plywood box that is thinner, more stable and doubles as enclosed storage. It comes apart with an Allen key in about five minutes. Its side walls compensate for the Sienna’s sloped floor, and aluminum angles with rollers guide the sections.

Everything in the van should be secured. The bed’s foundation is two pieces of lumber attached with U-bolts to the third-row seat lock strikers, joined by steel angles that the frame side walls bolt to.

Lumber crossbars and steel angles bolted to the third-row seat strikers on the floor of a Toyota Sienna as the foundation for the camper bed frame
The bed foundation, anchored to the third-row seat strikers.

Bed, Sofa and Lounge Modes

Bed: all sections flat, foot-section legs unfolded. Sofa: lift the middle section by its handles, slide the leg section to the seating position and fold the legs.

Camper bed folded into sofa mode with a grey quilted cover inside a Toyota Sienna minivan camper, next to the electrical panel and counter
Sofa mode for daytime sitting and working.

Lounge: open the security locks at the back, lift the head section and set its support legs, made from aluminum tripod extension poles, into their brackets.

Head section of the minivan camper bed lifted into lounge mode, held by two black and red telescopic support legs above the open bed frame
Lounge mode: the head section is held up by telescopic legs.

Storage and a Hidden Outdoor Table

The frame walls form a storage box with two removable dividers, making three compartments. I lift the seating section and prop it with a magnetic latch. Because the sections disconnect, the head section also becomes an outdoor table on four telescopic legs that level on uneven ground.

Under-bed storage box in a minivan camper with the seating section lifted and propped by a magnetic latch, showing divided compartments and a fire extinguisher
Under-bed storage with the seating section propped open by a magnetic latch.

Quick Facts

  • Vehicle: Toyota Sienna minivan
  • Mattress: 4″ tri-fold, 74″ long, 50″ wide after trimming
  • Platform: three 24″ plywood sections, lift-off hinges
  • Frame: plywood box, removable with an Allen key
  • Anchoring: third-row seat strikers and U-bolts
  • Modes: bed, sofa and lounge, plus an outdoor table

Next up, Episode 4: The Sink Module. I cover water containers, the pump (and why to use an accumulator tank), the sink and the faucet.

← Episode 2: Floor  |  Full build story  |  Episode 4: Sink →