Make a paper letter to place on each stair. Each time your child goes up or down, ask him to say the correct letter. Start with a few letters, adding more as he masters them. Accompany him up the stairs the first few times, repeating the letter and its sound. Give him plenty of independent practice for several days, then check for learning and add letters as needed.
Hide several letters around the room. Ask your child to find them and say the letter's name. Use the letters in her name or family members' names. When all letters are found, see if she can put them together correctly to spell her own name.
Create two sets of index cards with one letter per card. Each card should have a match. Start with a small group of five or six pairs. Mix them up, placing them face down on a table. Take turns turning over cards and finding matches. Continue to add cards to the game until you are using all 26 pairs.
Play a game of "I Spy" while driving, shopping or lounging at home. Point out letters where you see them, saying, "I spy the letter T. Your name begins with T." Ask your child to find it. Additional challenges include pointing out beginning sounds instead of letters. For example, say, "I spy something that begins with /b/," while saying the sound out loud. Take turns, letting your child spy letters and sounds as well.