Hi,

you can search for models of furniture or appliances e.g. at Google Sketchup 3dWarehouse:

klick me

also, there are other Sites with legal and/or free to use 3d-models. Some of those sites are already mentioned in this forum.

please lookup the supported 3d-formats from within the help.

The you can import those models into SH3D as described in help.
goood luck!

macfrog