Sending out personalized "thank you" cards is a tradition that has been carried out for hundreds of years, with no sign of slowing due to the rise of email and the Internet. Typically, a thank you card is a small card, usually folded, with a brief note written inside to thank the recipient for attending a function, or going above and beyond the call of regular life to be of assistance. However, sometimes a "thank you" warrants a letter or a longer commentary than a simple card can provide, and it's a nice touch to add a fun, colorful sticker or two to add a bit of spice to the letter.
Getting thank you stickers designed and printed is generally pretty simple and isn't a very expensive endeavor. While you can go with a simple "thank you" design with some color added to it, try to think outside the box when designing your own personal stickers. A small picture of your family, or of a cartoon drawing of your family, is a nice touch that will likely draw a laugh from the person reading your letter.
Thank you stickers can also be used for a wide range of applications. Don't feel that you're limited to using them for letters – they can be used on the envelope as well, or attached to anything that is given to a person to thank them for their service. Thank you cards are meant to express gratitude, so use these stickers to show how much the recipient means to you!