This PDF contains 5 oral blending and segmenting activities. I would make the following amendments:
Activity 2: Baseball - just break up phoneme by phoneme (not by syllable or onset/rhyme)
Activity 3: I Spy - if you were orally segmenting ball, it would be /b/ /or/ /l/
Activity 4: I would avoid using words containing adjacent consonsants for the majority of children at this stage (eg glass, nest), unless they are very confident at orally segmenting words with 2 or 3 sounds and no adjacent consonants.