Use code "SPECIAL20" to save 20% off (you can use the code on http://www.kohls.com/kohlsStore/clearance.jsp too).
Automatically receive $10 Kohl's Cash back for every $50 you spend. Details here.
You can get free shipping for orders over $75 (after all discounts). Kohl's has a very lax return policy. I won't tell if you order up to $75 just to get free shipping and return the stuff you don't want.
If you have a Kohl's card you can use code "YOURMVC50" for free shipping when you spend over $50.
They have mens' shorts starting from $6 (and a bunch for $8). They have lots of womens' tops for under $10 and just above.