Thank you gentlemen for comments, indeed I was inspired by various displays at Echtdampfhallentreffen in Germany.
I have few more ideas for accessories, such as :
Dynamo, praxinoscope, influence machine and an old style 78rpm gramophone would be very cool, if I can get enough power to drive it.
Japan toy maker Gakken made a nice kit, unfortunately it seems to be sold out now.
So I keep on searching for one..
Some other ideas for more interesting accessories?