This is a great letter identification activity that can be easily differentiated. Students choose their sheet - either focusing on lowercase letters, uppercase letters, or both. They can also choose a sheet that has numerous letters already on it, or ones that they need to find all the missing letters. Stamp the Alphabet also allows for fine motor work as students hold and make sure they stamp the letter in the appropriate spot.
*If you do not have stamps you could always have students write in the letters too. You could also laminate the sheets to make them reusable, so many possibilities!