There are letters on 4 sides of each block, which gives you 16+ words to use throughout the year. I used the green because it matches the standard decor in my house, and that color works for most of the holidays.
Here are pictures with 2 of the words. The words they spell are:
If you want to make these, here is the letter breakdown:
Block #1 - T F B W
Block #2 - E Y H D
Block #3 - D O M E
Block #4 - R T E P
Block #5 - A C R S
Block #6 - L N O V
Block #7 - K M I S
These are out of a 4"x4" post from Home Depot (but it's actually 3.5" wide, so I'm not sure why they call it a 4" if it's not 4 inches - oh well)
I cut out the letters with my cricut but ran out of black vinyl, so I used black cardstock - which makes it cheaper too!