Did you know that September 12 is the National Day of Encouragement?
Dayspring offers a ton of free ecards - no registration or hoops to jump through required! (Hint: You can hop over and complete one right now and then where it says "send greeting on" just change the date to have it auto-sent either tomorrow or the 12th.)
Or you can do things the old fashioned way - grab a piece of paper (extra points if it's pretty) and write a few lines reminding someone that you're thinking of them and leave it somewhere they're sure to find it.
Who do you know that could really use some encouragement this week?