My son is 18 months old, and he loves to run around and touch pretty things. We have some really pretty, old and fragile Christmas ornaments from Amanda’s side of the family, but I was too scared to put them on our tree this year.
I designed some tree ornaments in Fusion 360, and printed them out. I found a cool trick where I was able to get the printed ornament to be a single layer thick, and have a hollow bottom. This means you can use a traditional metal ornament cap, or print one. The thin walls also means they are pretty when you put them over your Christmas lights.
I uploaded the files for the Teardrop Ornament to YouMagine.