Do your kids give their teachers a gift at the end of the year to say thank you for teaching them? My boys have always made something as a token of their appreciation to their teachers. At Christmas we are renowned for our thumbprint robin or reindeer mugs, so we like to shake it up a bit each year depending on the sex of their teachers.
The notebooks were from the pound shop and the stamps we already have, but you can pick up similar from ebay, just search for 70 piece Alphabet/Number/Symbol Stamping Kit, they are about £10 and brilliant for all sorts of things.
We used washi tape or stick on stamps to hide the smudge marks!
We also bought the two main teachers a brill stamp set from Skull and Cross Buns on Etsy.