Ta-da! I'm excited to share I got a digital keyboard.
Never heard of the brand? Me neither. But it perfectly serves the purpose of practicing students' accompany parts. The best part is that I don't have to get it tuned :-)
I am also going to use it to go over intonation on violin when I have to play with piano. Piano tuning (called well-tempered tuning; each interval is exactly the same) is a bit tricky for many of non-pianists. We tend to play and hear each interval differently according to the key. For instance, a leading tone, the note before a tonic (the "home" note of the key) should be played on the sharp side. So in key of C major, you want to play the B, the leading tone, a bit higher than well-tempered B. You can't use much of those tweaks when you play with piano. I have been using a tuner to go over well-tempered tuning but it will be much easier with the digital keyboard's recording and play-back function.