I have created a wide variety of reading fluency interventions most of them with specific students in mind. What I have found in my 3 years of teaching reading for a specific learning disability/high functioning special education student profile is that there is a very wide range in deficits that these students have with reading. In many cases there is a disability or condition that causes an area of deficit. Colorblindness is one such example, near sightedness is another there are many other conditions or shortcomings a student may have that caused them to miss foundational reading knowledge. Differentiation based models offer interventions that are too broad and not personalized for a students need profile.
Below are some images of interventions I have used in the past. Each image has a trail to a specific student need and personal preference, images and videos were created very rapidly in spark or powerpoint. The videos below are examples of resources I would make specific to a student with their input, they would choose the music in the background and the background images, they would tell me how long each slide should be, whether the card was read aloud and how many repetitions were decided by the student.
Adobe Spark and Powerpoint are so user friendly at this point that I can take most existing fluency addressing systems like Dibels or Barton.