Here is a list of things that I've made in my program:
Send e-mails when problems with temperature, heating, poolpump, rain, or AC power. (WagoLIBMAIL)
Reading Yahoo Weather to control garden watering (Oscatnetwork.lib112)
Control the lights outside (sunset and sunrise) (Oscat_basic.lib332)
Controlling the temp. in house end steer the heathing.
Control if the heating starts (check temp. after 5 minutes)
Steering the poolpump depending of temp. poolwater.
Counting workhours of poolpomp.