Here's a "Covid Quarantine" idea (wine generated to be sure) to occupy some of my time. I'm confident folks here are familiar with Leggos. I've stepped on countless ones barefoot in the wee hours of the morning. The only thing more enjoyable is trodding barefoot on cat puke in the dark while half asleep.
So! What would you (parents & especially Grandparents) think of wooden "Leggo-like" building blocks made of natural finished woods. But really large. Take a classic leggo block; [pictured], and expand the dimensions to about 3.5" for the width. I've a 3 year old grandson and another grandson on the way.