some ideas for a d.i.y table : a solar panel- either real or on cardboared with a diagram - how to hook it up - a power converter- I have a 400 watt model- I'd avoid a battery. Water wheel photos- a gardening display with photos- maybe apeiron can help with this- they do a lot of cool stuff like that-- depending on how it goes with Rick @ Greenway Cycles, maybe he can lend a hand.- my son might have some ideas too..........Ruuuussss