Good Work LIZ! I never would have thought to attempt a custard in the micro..
You probably could start a new thread just on short cuts using the microwave.
My 2 favorite uses of the microwave; softening butter and melting chocolate. I couldn't melt chocolate with-out one anymore.
I use it all the time to heat any liquids, like heavy cream for ganache. If you have to live with-out something (like a stove) necessity really is the mother to invention!! I bet...