It's hard getting back to "real life" after a long break during the holidays!
If you have riff ideas, you can always try humming them into your phone to record them. I think as long as you capture the essence of the idea, you'll be able to capture better on your guitar later. Ideas like that are very fleeting...I've had them disappear in seconds. You get interrupted and poof, they are gone.
I really enjoy listening to a good drummer, especially live. If I had to stop playing guitar, I'd take up drums.