taxadmin.org offers 2011 State Sales Tax Holiday!!
http://www.taxadmin.org/fta/rate/sales_holiday.htmlDates are in August:
Alabama, 5-7
Arkansas, 6-7
Connecticut- 21-27
Florida-t 12-14
Iowa, 5-6
Louisiana, 5-6
Maryland 14-20
Missouri, 5-7
New Mexico, 5-7
North Carolina, 5-7
Oklahoma, 5-7
South Carolina, 5-7
Tennessee, 5-7
Texas 19-21
Virginia, 5-7
Massachusetts is Aug 13 and 14
You can also check this website for items that may be included in the tax free sales for your state.