In the game The Elder Scrolls V: Skyrim, straw (hay) can be purchased from most general traders. Try the Riverwood General Trader located north of Falkreath. Straw has also been found for sale in Rifton.
Straw is used in the construction of archery targets, apiaries (beehives), beds, and trophies.
The next official add-on for Skyrim, called "Dragonborn", will be available for download on Xbox Live on December 4, 2012 for 1600 Microsoft Points.