After sifting through my personal collection of rubber stamps and going through the stamp selection at my local craft store, I came to the conclusion that I will never find a decent "Thank You" stamp in an aesthetically pleasing font. So I decided to create my own! All I needed was some carving tools, a block of the 4x6 Speedball speedy-carve rubber, an inkjet printer and printer paper, an iron, a small piece of wood for the mount, some stamp ink, E-6000 all-purpose glue.
First, get on the computer and print off black & white text or an image that will be manageable to carve into the speedy-carve rubber. Use a slightly warm iron to transfer and transpose the image onto the speedy-carve stamp material. Cut out the area where your print was transfered onto so that you have a smaller portion of speedy-carve rubber to manage.
Next, use the carving tools to cut away all the pink area that you don't want to show up in the stamp.
After you feel you are finished, do a few tests runs of the stamp using the black ink pad and some white paper. These tests will show if you have possibly missed some pink areas, while carving. Continue carving away the pink rubber till the stamp produces text or an image similar to the derivative text or image.
Now find or cut a piece of wood a bit larger than your stamp. Using E-6000 all-purpose glue, glue the stamp back to the wood black. Let the glue set for 24 hours before use.
In the end I used the "Thank you" stamp I made for brown paper bag business card holders to accompany my sold orders through www.etsy.com/shop/CollectiveIndividual.
Hope this helps someone out there!