Ideas for preschoolers

I know this has been discussed before and I have looked at most the posts but I'm hoping to get some insight for my situation.
I have some private students, only 3 kids right now aged 3-4. I have a lot of experience with larger classes so I have a bank of games to play. I also follow the eslkidsstuff curriculum and add my own activities.

The problem is that the chemistry for this class in particular is throwing me for a loop. The two girls feed off each other's いやだ energy so during class they are not interested at all in dancing, running, singing or anything…. If one is absent the other will participate a bit. And after classes the kids all perk up and say they had fun. I think they do like the class but there is a lack of wanting to do the normal kindie active stuff. The third kid, a boy, is good and does all the stuff.

I have found a little success with bringing blocks or some other small toys but they bore quickly if I use it multiple weeks in a row. Books can work occasionally and drawing is hit or miss..
After a while on a topic they might speak the English we study and so I know they are listening and learning. At this point I just focus a lot on listening practice and just keep encouraging them to speak but don't push too hard.
I'm asking if anyone has any ideas for activities for young kids. Maybe I can find something they'll go nuts over.

by Ejemy