Ah...

I was thinking about getting the bedframe from Perfecto, scaling the mattresses to fit snugly, and allow the sim to drape over the mattresses and around the frame.

Alternatively, I could just pass off the mattresses and cloth to Perfecto, but that depends on if he's willing to let his computer spend some processing time letting the cloth fall over the geomerty (5-6 seconds to sim one frame with just the mattresses).

Or I can continue on, make some pillows, stick those on the mattresses, and then let the cloth fall over the pillows and the mattresses...