Fence rails wrap the whole sleeping area on this twin house bed, broken only by a 15-in entry gap that a child steps through. The pitched house frame is left plain on purpose, so string lights, ribbon, or a curtain can be tied wherever a kid wants them. Underneath, a trundle rolls out through cut-out handles on wheels and settles against stoppers at both ends. Plywood slats give each deck a 330-lb rating and take a 6-in twin mattress with no box spring.