I couldn't use only the swing.
For some reason, one of my kids got nauseous after two consecutive swinging sessions in my practice file.
I ended up having the kids switch between 4 different activities.
Clearly I'm not as compassionate as you. When your kids got sick, you gave them an alternate activity; when my kids got sick, I said, "Suck it up, kid! Keep swinging!"
It didn't seem that nausea slowed then down with regards to how fast they got the badge. (Oh, bad mom
)
I did pretty much the same activities as
@LenaLJ , except Civic Responsibility and Arts and Crafts. - When I practiced, and cancelled mess-making right away, the mess disappeared if I didn't give more mess-making time, so I went looking for a faster activity. When Lena said she used that, I figured I was missing something, so I fired up a game with kids, and sure enough, the mess disappears from sight, but the kid can still "Clean up". (I love how I always learn new things in every challenge.) Instead of that, I gave mom a bar and had her pour 24 glasses of water in a fenced in area (so the club members wouldn't come drink them). For each kid, I put out 8 glasses on a counter right beside a trash can and had them throw them away one at a time. Very fast.
For Arts and crafts, create Summer crafts was faster than Draw, and in a test between 2 kids, one being encouraged and the other not, I saw no difference in how fast they completed the craft. The one being encouraged did gain more skill. (I noticed the same for homework - a kid being "helped" got the badge just as the homework was done. Her sister, who was not being helped got the badge at the same time, but the homework wasn't completed.) So I didn't worry about having an adult to help. But then I found that if the birthday cake was ready and placed near a kid, that kid could age up and paint 6 small classic paintings in the same amount of time that the other kid could complete 5 Summer crafts.
I alternated socials (Friendly, Joke, Gift, Friendly, Joke, Gift, etc. so I could keep using "Ask about Day" without getting a boredom moodlet; when gifts (bottles of bubbles) and jokes were done, I pulled them from the rotation and finished friendly socials).
So I had my kids start - one on the swings (the longest activity), one on socials, and one on the very fast activities (Outdoor, Scholarly, Civic, Scientist). When each finished all of those, I aged them up, had them paint and collected all the badges at once.
Congratulations
@LenaLJ!