Adjust rounds to your need (e.g. more/less rounds, less/more rest, back 2 back).
[1] Second ball ab roll -> Ab wheel roll out
[2] Cross body crunches -> Sprinters (https://gethealthyu.com/exercise/sprinter-sit-up/)
[3] Dead bug holds-> Dead bugs with extensions (alternate left arm+right leg-/right arm+left leg-extension)