I am Orton-Gillingham trained, so I follow OG methods for teaching syllable division and decoding for multisyllable words. It's a multi-step process through with students label vowels and consonants to detect patterns for syllable division.
We do this using highlighters, which my students love. You could easily use markers, but the highlighters are typically something different for them, and we all know how appealing that can make an activity for our students! We use one color to write the word and then a different color to mark letters and divide syllables.
When we are finished labeling, dividing, and manipulating the syllables in a word, my students store the syllables in a zip-lock back I attached inside the back of their folders. It's a simple way to store all of those syllables, but it serves a great purpose for the future as well.
At any point, we can empty our syllable bags and use the word parts to create nonsense words or do a syllable sorting activity. The fact that the students reuse their own work makes it a very personal review experience for them.
At the end of the year, I send the syllable bags home, and it's like sending home a bag of word puzzle pieces. They invest a lot of time in those syllable bags throughout the year, so most of them seem really proud to be able to take them home.
I hope that is helpful for you! Please let me know if you have any questions or would like to know more!