Happy Birthday Homework Certificate. You may not feel comfortable giving a student a birthday gift, but I have just the thing for your students. On the week of their birthday I award him/her a Homework Free Birthday Certificate. They may use this anytime during the year. (Just like coupons, some assignments are excluded from use with this certificate.) Summer birthday certificates are awarded in early May. Many of my students never use their certificate, but just having it makes them feel better.