dustractor.github.io

if you are ever feeling un-inspired, just play some blues

I    I    I    I
IV   IV   I    I
V    IV   I    I

or

I   I   I   I
I   I   I   I
IV  IV  I   I
V   IV  I   I

or even

I IV I V

or just

I   V

loop those chords in your daw and solo over it for a while