Project Ideas for interns that don't have an internship

I've been mentoring new college grads that are trying to find a job in this environment. I want to extend that further and help out students that had their internship canceled or never got a chance to get one due to the current situation.

I'd like to get ideas for projects that interns can reasonably finish on their own during a 3-month period. I'm willing to spend a few hours on weekends reviewing their work and guiding them. Of course, it'd be great if more people could join me to help these kids out. If the project calls for cloud resources, I'm considering paying it up to a certain limit. If there are sources where I can find these potential projects (or if you'd like to see some new feature being developed in an open source project), it'd be great if you can share them.