Create a list called "lights on" and fill with task. any task marked complete in this list will turn on a WeMo
If
New reminder added to list
This Trigger fires every time a new reminder is added to the list you specify.
Then
Turn on
This Action will turn a WeMo Switch on. If the WeMo Switch is already on, it will remain on.
Explore more great ways to automate WeMo Smart Plug and iOS Reminders