[G6Tanuki]

I wonder if a small ex-laptop fan run at a reduced voltage from a wall-wart [everyone's got loads of ex-phone chargers] and pointed towards the spinners might provide suitable pneumatic 'excitation' ??

Drop in a couple of the Philips 'hue' Zigbee-connected colour-adjustable LED bulbs, then sit back on your sofa and have fun changing the colour and brightness from your phone.

[I once fitted Blue and Green bayonet-base incandescent bulbs [as used in strings of christmas-tree-illuminations that feature in every town-centre] to a fake-log-effect fire. The result was deeply perplexing, all the moreso after a few beers!]