Wonderful post! I explain it to my friends and family that they should think of bitcoin like a slot machine. People but in time, and hash power to get a chance of a payout. The more you put into, the more valuble it becomes. Then you can hold on to, spend or reinvest your "payout".
As for Ether, I describe it like a super computer. From your computer you can run an untold number of programs and functions. If you complete the functions/tasks your get rewarded/paid for your work.
It seems to be enough to get them looking into it at least.