Our denomination, the United Church of Christ, provides an excellent daily devotional, written by the “Still Speaking” writers group.
To have the devotions emailed to you daily go to: http://www.ucc.org/daily_devotional
There are plenty of online devotionals. Two popular ones are:
“Our Daily Bread” at: http://odb.org/
“The Upper Room” at: http://devotional.upperroom.org/