Though officially celebrated on April 14th, I say celebrate national Poem in Your Pocket Day everyday! The idea is pretty self-explanatory - carry a poem you love with you or share one with those around you. The Academy of American Poets has some handy-dandy poetry books printed on tear-away sheets for just this purpose, but also poem PDFs to print and share.
see full list of poem PDFs here
Right now I wouldn't mind carrying around the poem found under "Moth" in my pocket for a few days. It's one of my favorites.
by Robert Frost
I found a dimpled spider, fat and white,
On a white heal-all, holding up a moth
Like a white piece of rigid satin cloth--
Assorted characters of death and blight
Mixed ready to begin the morning right,
Like the ingredients of a witches' broth--
A snow-drop spider, a flower like a froth,
And dead wings carried like a paper kite.
What had that flower to do with being white,
The wayside blue and innocent heal-all?
What brought the kindred spider to that height,
Then steered the white moth thither in the night?
What but design of darkness to appall?--
If design govern in a thing so small.