External retrig device for Digitakt?

Coming from the Push 2, it annoys me that i cannot hold note repeats/ rolls / retrigs on the fly on the Digitakt, this missing feature makes it somewhat harder for me to organically jam out my beats. Otherwise i do really like this machine and the features of the sequencer, and I wonder if there is any small simple midi device that could be attached to the digitakt that could do this? (with controllable resolution) A Beatstep pro seams like an overkill for this feature alone.