After I saw patterns which used pieces of cardboard or plastic sheets with grids to make doll appliances, I thought of covering lego blocks with crochet. Then I added crocheted doors, countertops, handles, and buttons. The result was surprising and very appealing. I just wing it without a pattern; cover stacked lego in continuous rounds and then make doors and counter tops separately and sew them on.
This bed and dresser also have a lego base.
I covered a plastic oval and container to make the table; the chair was scratched so I crocheted a sort of slip cover to match the table.
I found a free pattern for the chair and cradle.