For clothes, will you need winter v coat, hat, gloves, boots, snow pants? Rain coat and boots. Dressy clothes v for holiday or pictures?
Basics:
Pants
Shirts
Socks, shoes
Light jacket or fleece or sweat shirt
Undies? Some kids potty train by age two. Potty chair or seat for the toilet.
Backpack. Sun hat. Swim suit.
I'm not sure what a sit stand table is, but how about gifts, for Christmas or birthday? Blocks, duplos, wooden trains, cars, balls are all favorites that age.