From the 1908 Webster's:
Meditate: To keep the mind in a state of contemplation; to dwell on anything in thought; to think seriously; to muse; to cogitate; to reflect.
What can one meditate on?
Things to do today.
People to contact today.
Some interesting recipe to cook today.
Little day-to-day amends or apologies that need making.
Instant problem solving: name the circling problem and ask God:
What's the right thought?
What's the right action?
What's the right action?
Write it all down!