The weekend project was a little software factory where my kids and I build another little game. It's completely crazy how good these models got. It's really a lot of fun, and you can have it try to do things you wanted for a long time (eg: using WFC for worldgen).
Hot take for agents: there are situations were VMs work great, there are situations where sandboxes work great, there are situations where a durable object is all you need, and there are situations where you just need a javascript interpreter. And probably many more situations.