I have been using Galloping Minds Flash Cards for teaching my daughter the alphabet, numbers and phonics.
General description: Post Card Size and uv coated with beautiful images. Robust to minimize the toddler chew-effect.
Alphabet Flash Cards - 26 in count. Each card has capitals and lower case letters. They're quite attractive.
Every letter has a few words associated with the letter. I generally read the words on the cards aloud and then point at the letter. My daughter, repeats the words after me. She loves the colors and beautiful images and spends a good amount of time just looking at the cards.
The Phonics Flash Cards - about 36 blends, which include consonant and vowel digraphs, initial consonant blends and final consonant blends. Each blend is associated with a beautiful image and a few words to help your child grasp. On an average every blend has about 3 words associated with it. It's great for building my daughters vocabulary.
Numbers and Animals Flash Cards: There are 20 cards.
Each number card has a cute animal associated with it. I point at the number on the card and then my daughter counts the animals.