Flam tap is one of my favorite rudiments, I often use it to end a phrase or for transitions.
This Flam Tap warm-up is based on this rudiment and applies it to grouping. I use sixteenth notes, grouped in sequence by 2, 3, 5, 7, and then back to 2.

This exercise is very useful to get acquainted with odd groupings in even subdivisions and helps to hear and recognize small odd rhythmic cells.

Here are the exercise and the full score: