What about some outdoor toys? if it is super cold where you are he might not be able to use them for a while but would be good for the upcoming mths, Outside play house, scooter, trike, sand box, small kiddies basketball hoop etc My daughter loves our rubber Tea ball pole she spends ages playing with that and bat and ball we have this one;
https://www.amazon.com/MacGregor-BBBATTEE9-Batting-Tee/dp/B002NKX48A/ref=sr_1_2?ie=UTF8&qid=1446497090&sr=8-2&keywords=teeball+set
but Little tykes have one too!!
playdoh, wooden train set, Playmobil toys- they do the 123 range for the younger ones if you don't want small peices, craft stuff.