1) If there's an exciting fun task and a messy unpleasant task, assign the fun task to someone else and do the unpleasant task yourself.
2) If someone on your team wants to ask you a question, always make yourself available and absolutely pretend that you don't mind being interrupted. But if you need to ask someone on your team a question, always ask first if it is a good time for them to talk and offer to come back later if they are in the middle of something.
3) If someone wants to try an approach that you think is wrong, say: "I'm not sure that's the right approach, because of X, Y, and Z. However, I've been wrong before, so I might be wrong about this, too. How long will it take you to research this approach and see if it works out?" If you're working on a tight schedule, this may not be practical, but if you want to develop good engineers in the long run, this can be beneficial for everyone.