Windows are easy enough to do, just a transparent cylinder in the side of the capsule.
A guidance computer would be pretty cool, but would also take a lot of coding. I am learning to code, so I might be able to do something soon (But I have a feeling that a quidance computer probably wouldn't be the best first project I could choose).
Life support fitting in with UMMU, could be interesting. Does anyone know what's happening with that pack of spacesuits that was being worked on by someone?