I work at a school doing "aftercare" part time when I'm not in classes.
Aftercare is basically day care during-after school ends where parents can't pick up kids, or simply don't want to until later.
It's a really great job, and I'm trained to work with 3 - 12 year olds. What's really popular between those ages is Roblox (mainly in the older kids 7 - 12). I primarily work with Kindergarten (5 - 6 year olds) who are discovering roblox, and liking it.
When I had one kid lef (6 yr) t, he was playing Roblox and asked me to play with him on some star wars server, there was a computer next to him - so I said sure.
It was fun.