My latest playground in photography is time-lapse. It does not require a big investment, perhaps only an intervalometer. I use Magic Lantern which is an incredible free program for Canons and I think Nikon has a built in intervalometer. I have been using an old Quicktime Pro program but switched over to Sequence for this video. At $35 it is a perfect replacement for Quicktime on Macs. Its ability to remove flicker is a major improvement over Quicktime.