I LOVE the blocks my sister got Alex for Christmas, the B. Elemenosqueeze blocks. They're soft, so I don't have to worry about them hurting him when he falls on them, and each one has a letter and animal on it. Some are plain cubes, but also some are columns and arches so you can actually make cool stuff with them. Here's a link, sorry I can't make it clicky. https://justb-byou.com/toys/smart/elemenosqueeze/
I like the fisher price peek a blocks. They have items inside them that start with the letter printed on the side. I used them in speech therapy because they provided a lot to talk about and describe.
Re: Rec your blocks