Write the letter of the day/week on a piece of construction paper (at the top or top corner maybe) then have children look through magazines to find pictures of items that start with that letter. (good practice of the sound of the letter you are teaching). Let the children cut out the pictures and glue them to the construction paper.
Cut a potato in half and carve out different letters. Have the children paint with them making alphabet prints.
Buy some letter sponges and have the children paint with them.
Go to your local dollar store and purchase a set or two of alphabet stamps and stamp pads. Have the children stamp the letters. Depending on their ages, you can have then stamp their name or other words too.
On the chalk board, felt board, or paper, draw the first letter or the name of a child and ask all the children who’s name it is (who’s name starts with this letter?)