Posters (available in two different fonts) that contain a short rhyme and small word lists to help pupils remember their long vowel sounds. also includes blank versions of the posters for pupils to add their own words to.
I would add to the saying "when two vowels go walking the first one does the talking and USUALLY says its name." this will give the students the decoding strategy that if the vowel name doesn't work try the short vowel sound... one or the other should handle most words. Also I would put these up on the blackboard while using them but not on the wall.