Watch the Funky Child: Rhythm online guitar lesson by Jeff McErlain from Blues-Rock Evolution

When I'm bored with the guitar, transcribing has always been the cure for me. It doesn't matter what I transcribe, as long as my hands are on the guitar and I have my ears working.
I'll dig up a song or solo that I've always wanted to learn, or relearn the solo to something like AC/DC's 'You Shook Me All Night Long". Next thing I know, two hours have gone by and I remember why I love the guitar. There is always something to transcribe.