Sorry to hear about your loss.
To second everyone else though, 60 is not too old. Plenty of people on here are in the 50+ age bracket.
Chastity is a game you can still play solo (people have suggested doing it with dice to determine length of time your locked up, number times your edged etc).
There is also a nice thread Here where we throw about solo bdsm ideas. So that might be a good one to read through