I've been hunting for silverware that would be the right scale and not stupid looking.
I found some on a couple of sites that sell American Girl stuff (doll-hospital.com (not everything they list is in stock) and lovvbugg. I really am not fond of those dolls (I think they are creepy - apologies if you are a fan) but I'll gladly pillage their possessions for Things that Work).
The silverware (also comes in gold color) comes in a set of 12 pieces and in a wire basket thing. The pieces are 3 1/4" long.
The plate and blue tumbler I got off a couple of Etsy vintage sellers, and the table (too small in scale) I made.
The plate is 3 3/4" wide (I'd rather it was 3 1/4) and the tumbler is 1 1/4" across and 2" tall.
I've decided that the seat of a dining chair needs to be 6" and the table top 10" tall. Now I have to figure out how to make a dining set.
For these pictures, Amelia is sitting on a chest of drawers tipped over sideways and the table is propped up on the drawers from the chest. I have no idea what Regina is doing in the background. Probably yelling for her dinner.