g scale rolling stock plans

[Capdiamont]

Hello,
I was wondering what all websites have rolling stock plans? Hopefully free and simple. I know Garden railways has plans, but I want more. I'm trying to get back in to Garden Railroading cheap as possible. I'm thinking of a small battery powered loco, like the ugly duckling kit. I'm also thinking of stainless wheel sets and Kadee couplers. Kadee has lots of couplers for conversions, but I'm unsure of wwhich ones for scratch built models.