I know it maybe crazy but buying a good pair of scissors is the best thing ever. Going from a cheap pair of Dollar Store scissors to the Scotch makes cutting paper so much easier.
http://www.amazon.com/Scotch-1448-Precision-Scissor-8-Inches/dp/B001BKHHGS
http://www.amazon.com/Scotch-1448-Precision-Scissor-8-Inches/dp/B001BKHHGS