add on kits? Are they worth buying?

I am enjoying the Bust the Dust kit very much. Especially since it got tuned a bit. It's nice to have my Homemaker Mom have a few things to do when her hubby and five kids are off for most of the day. She putters around, does laundry on her own, gardens, and runs the vacuum cleaner. Next thing, the family are all back. Helps that Dad is in the Education Career, too. They all get home about the same time.

https://i.imgur.com/kE21b45.jpg
My young Global Superstar isn't above doing chores, either
https://i.imgur.com/YfrLmXj.jpg