M.G.
Am getting a chuckle out of the responses - bringing back memories. Oh I remember the standing up change of diapers - lol. Funny. Yes, you can do it standing up. Poop is another matter ... I remember wrestling them sometimes. It is a phase.
My most active one now - was the most active toddler. He would stop for snacks - so I often gave a snack or sippy when changing diaper (hey, whatever worked) and same with being in the grocery cart. However, I was like Gidget. I stopped taking that one in particular shopping - and didn't for years. It was too much. He just didn't enjoy it and I certainly didn't.
I never, ever did art projects with my kids at 15 months. I would instead fill a tub or sink with water and let them splash in the bubbles, that kind of thing. Mine (not even my quiet project loving kids) would have been able to sit still long for art at 15 months. We did finger painting - that kind of thing (a little later) but if it was a smear, then it was a smear.
My active one at that age enjoyed things like these huge building blocks we had. Climbing on our couch cushions. That kind of physical thing. He loved balls. I invested in some equipment that involved balls, climbing, that kind of thing - and they used it for years.
It wasn't until the next one came along that I realized there are small children who like to play with trains and look at books and that sort of thing. They are all different. I had a very placid one too - who would lay down when it was time to change diaper - just knew it was time and was very helpful, would hand me wipes.