So my kid has lost a bunch of these shapes and I'm going to make a replacement set.

Does anyone have any ideas for how to get a consistent roundover on the corners? I have a router table but no CNC.

The square and rectangle I could do with a roundover bit and the blocks on their sides. But I don't see any obvious solutions for the pentagon and triangle.

I'm totally fine just hand sanding these, but this kind of problem solving makes woodworking fun!