When my OT went kaput last year, I used my OP-1 as an emergency sample player. All I did was export the prepared audio files out of the OT (was still functional enough to let me connect my computer to it via USB), and arrange the audio clips into track regions for OP-1 playback for use with the region looping feature.
We got through the gig fine but I've been thinking about getting a backup sample player ever since. Was thinking Electribe Sampler but the Digitakt throws an interesting twist.
I do mean to keep the OT either way, unless it's totally beyond repair. From what I understand the fix might be as simple as deleting all those test/learning projects I created on it.
I'd use a DT/Electribe for the basic sample playback - if DT, the condtional trigs would be useful for on-the-fly pattern variations - and OT for the improvised sound mangling/looping