Heartsy | $9 for $20 at Rational Designs

After holiday gifting season is over, you’re gonna need some thank you notes. Maybe you’ll even need a lot of thank you notes. Might as well stock up now, right? Today Heartsy has a deal for Rational Designs, a shop that sells all kinds of pretty stationery and cards for all your snail mail needs. Get a $9 credit for $20–if you’re a Heartsy VIP, you get $30 to spend. Click on the Heartsy banner to buy your voucher!