Fic Ideas

I've been working on a series on and off where my original time traveller meets up with all the Doctor's incarnations. So far only 3 out of 10. What I like to know is if anyone out there has any ideas for Doctor/Companion pairings as well as the time to place them.

I've so far used:

4th Doc/Adric 40th century

6th Doctor/Peri 24th century

8th Doctor/Fitz 17th century