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.
Give each child a lizard and a fly (downloadable below). Call out a word (eg bat) and get the children to orally segment it and then move the fly along the lizard from left to right, saying the sounds again ( b-a-t - 1 sound on each body part). You could extend by calling out one of the three sounds eg /t/ and the children have to put their fly on the correct part of the lizard (ie. the end part in this example.
Click below to download the instructions. NB: When working with nursery/early reception children I would just use 3 beads on the string (for most children at this point, it is too challenging to segment 4 or 5 sounds in a word). You could use 4 or 5 beads once the children are working at the end of Phase 3 or beyond.