I just finished reading Drive, the book about motivation from Daniel Pink. It's well worth a read if you want ideas on how to motivate others. Here are some of the practical take away points from a cricket coaching angle.
Old school motivation of "carrot and stick" only works for routine tasks. Anything else needs people to be internally motivated (motivation 3.0 as Pink calls it).
Intrinsic motivation depends on people having choice over what they do (autonomy), a Goldilocks challenge (not to easy, not too hard), and a reason to do it (purpose)
Coaches can help players find their purpose by asking why they are playing and what they want to achieve. Then checking in regularly to see if they are on track.
Players are more motivated if they involved in the creation of goals, ideally deciding them for themselves with some support from coaches.
"Deliberate practice" is important. For almost all of us, the cornerstones of practice are a clear objective, immediate feedback, repetition, and is an appropriate challenge.
Autonomous practice is also important. Give players space to decide what they want to do. This could be "free play" for 10-20% of training, or a bigger project where players plan an activity then put it into action.
Rewards for performance are much more motivating if they are given by peers.
Activities can be more motivational if they are novel and engaging, and have a clear connection to a deeper purpose.
Although not quite a checklist, these are some useful ideas to frame practice. Are we offering up autonomy, mastery at some level every time we coach? I know I could do this more.