If your looking for a non ("less")- breakable Suzuri (ink well) that can be utilized for grinding ink "sticks" as well, I and several students have been utilizing suzrui similar to one shown here. They are 2-sided, one for "bottled" ink (though either could obviously be utilized) and one for "grinding" an ink stick (as done with the "stone" versions). These are pretty inexpensive ("cheap") at $6-$10 dollars, and seem to be working very well.
Being that they are pretty durable, one doesn't have to be as concerned about dropping them (and then having them "break"!!!). they are the "standard" size of (approx.) 3" X 5" (+/-).