Educational tools

My son is 23 months. We are currently located in Europe, but will be living mainly in US as he gets older. We are a primarily English speaking household with minimal use of a 2nd language. However, where we are located, schooling requires a 3rd language as primary that no one in our household or family uses or understands fluently. In general, children tend to start school(preschool, but I think its more of daycare, from an American’s comparison) at about 18 months here. Due to the pandemic, he hasn’t been socializing at this crucial time. Also, if we choose to enter him into a preschool, it would need to be a private school and is not a reasonable price, in my opinion, considering my thoughts that I mentioned earlier that it seems to basically be “daycare” when that purpose isn’t needed. I guess all of this has just been me getting my thoughts out to see if they do make sense to others.

But the main purpose of this post is to get recommendations about learning tools, materials, curriculums, etc. Printing is an option, but I would prefer to receive nice materials by shipment. But don’t want to pay a huge amount for delivery and customs costs. Any recommendations, ideas and thoughts are welcome. TIA