Doing activities in a class also depend on how much time you got and what resources you can use.
If computer games are allowed, you can also ask your students to build a LAN for the class (from scratch - build their PC, connect to the network, etc) with your PC as the main server, then play Age of Empires afterwards. I do this to add fun to my class.
You can also play sort-of a quiz-bee where the students write questions on one side of the paper, and the answer at the back. The students form a group where they try to ask the other group questions. If group B didn't get to answer correctly, then group A gets the point etc. I like this, co'z I also get to build on my question bank. haha! With the lockdowns and all, we've turned this into an online thing, via MS Forms.
A+ Core1 is infrastructure. So if you got competitive students, you can probably time them and see who can build a working PC the fastest then post it on the corridor or bulletin - for bragging rights.
To kill time, we play bongo cat. LOL! It is something that I learned from a TTT session hahaha
Check it out. it's fun! see link:
https://bongo.cat/