I made one using FIMO and bamboo skewers, some gold powders and glue.
I covered the skewers as I would to make tube beads, but left the skewers inside for support. Four long ones make the posts, I cut shorter ones for the small bars in the head and foot of the bed, which were made in two separate sections in several steps.The curved sections at top were tube beads with the stick pulled out, the curve formed and then baked.The top curve section and the bottom straight section of the head and foot are joined with several uprights, Then the head and foot sections are joined at the mattress level and the canopy level with more skewers; I drilled holes and inserted the skewer then glued. All the joins were covered with bits of impressed clay. All parts of head and foot made and baked first, then joined to make the bed. Matress is a piece of cardboard and fabric with cotton batting. Lace drapes over the top to make a canopy. The one shown in the pics is Barbie scale/ fashion doll scale 1/6 (Dolls are about 10 inces tall)
hope this helps!