[mike1o1]

We purchased an Inglesina hook-on chair cover which was great as it allowed the little ones to sit at the table with us, instead of feeling separate with some of the bigger high chairs. It was a pain to clean, so we also got a Wunderland cover for it. We used this from around 6mo to about 3.5y for my older, and 6mo to 2.5y for my younger one.

Magna-tiles have been a big hit for both from about 2yo and on. Lots of knockoffs on Amazon, but we haven't had any issues with the 2 sets we purchased.

For books I really connected with "Hunt Gather Parent".

Aside from that, I'd say top thing is patience and sometimes just being quiet and not interfering when they're playing.