The next time a coworker does something nice for you, respond with a custom-designed thank you card. If a volunteer or parent helps out, show your appreciation with a special thank you card. When a students gives you a gift… yep, a thank you card. This collection of thank you’s conveys exactly what you want to say – whether it’s sincere or humorous. No trying to find the right words, no preparation – just sign and give. The only thing you have to do is grab an envelope.