I just finished a rather geeky project... it took me about a week. I built a couple of temperature probes that plug into my computer, and I wrote some software to chart the temperature inside and outside my house during the day. It even posts the info to my internet account every half hour so that I can check it from work or if I'm away for the weekend.
Now that the weather is nice, I have to spend all my free time doing gardening. It looks like regrowing grass on my front lawn is going to be a major project this summer.
Stompy: As for the exercise, are you sure you are doing it right?
I found when I worked out regularly I did feel better during the day. I'm not sure that I slept better, unless I got a LOT of exercise during the day. For example, I just golfed 18 holes and I'm sure I'll sleep like a baby tonight.