After the season nine finale, Hell Bent, there were many clamoring for a Clara and Me spin-off. That idea has inspired this Top Ten of other spin-off ideas:
10. About Jack
How can you not love Captain Jack Harness? There are two ways a Captain Jack spin-off could go, "The Further Adventures of Captain Jack" or "The Missing Years" from Jack's years with the time agency.
Origins would the early days of the Time Lord legends Omega and Rassilion maybe before they became evil megalomaniacs.
8. Another Universe: Rose and Clone Ten's Stories
My first idea was two separate shows "The Tales of The Osgood" and "Martha And Micky" then realized a show with them all together as a team would be very fun.
7. The Doctor's Daughter
I've always wanted to know what happened to Jenny.
A beloved classic companion was Ramana who traveled with the Fourth Doctor. There are some fun ways this spin-off could go. What was her life like in E-space? How did she return to Galiffery? How did she become the Lord President? All fun questions such a show could explore.
Maybe even with a young Doctor and Master.
3. The Adventures of River Song
I love River Song's character and think there is enough in her history and future to make for interesting stories and because space archaeology would be awesome.
2. Jo Grant Adventures
The Sarah Jane Adventures aired from 2007 till 2011. The fifth season only aired two weeks, production was permanently suspended due to actress Elizabeth Sladen's death. The idea her would be to have another of the Doctor's companions, Jo Grant, adopt Sarah Jane's son and continue the adventures.
1. The Great Detective or The Paternoster Gang
Why isn't this already a thing?
The BBC's digital Doctor Who 2015 Advent Calendar.
Countdown Till Christmas Special Airs: 4 sleeps
Countdown Till This Whovian sees the Christmas Special: 5 sleeps