Hmmm... I am interested in quite a few things - or so I would like to imagine; and, here is a partial list...
Seriously now, my current interests are PV power, mini-methane-digesters, planting bamboo, vetiver and neem - and the personal web agent that I have been threatening to write in Scheme, for a few years now! Hmmm, with all these lists and umpteen other gazillion things that I want to do - I am truly feeling listless.