I was looking around at my kid's blocks, and sure, there were plenty squares, circles, and triangles. I wanted to add some variety to those standard shapes, so I tossed these together. They're 40mm tall and are at least 25mm or so wide at their most narrow (i.e., NOT a choking hazard). The edges are rounded as well, so hopefully a kid won't stab their eyes out. No promises on that. Kids will be kids. See time-lapses of the things I print here: https://www.youtube.com/channel/UCQ9nW8XQAPWKGGKRd9LFQNQ