My team (and I know others too) will be creating a large number of bootcamp tasks to deal with this. The tasks, at least in my domain, require some knowledge of ML, flow-cli, and other internal tooling - we didn't have any headcount at the time of the freeze, however engineers are still rewarded when they help bootcampers, so there's that incentive. 

I would say I look back to my bootcamp experience (10 weeks, I was quite nervous by the end as I couldn't find a position I liked), and I think it was really difficult to contribute without the internal tooling knowledge: pick a domain you like and work on it, it's the best way to find yourself in a good team later on.

Senior Software Engineer [E5]

I'm in the same boat, and when I discussed it with my manager, he was quite happy about the fact I ran a couple of workshops to teach the rest of the team certain skills I saw they were missing. 

Helping others in your team if I understand it correctly should also help with ratings. If you have other teams that depend on you (e.g: your internal customers), making sure they grow with you could help too.