Help with thinly slicing garlic I buy bulk peeled garlic. When I bring it home I always throw some in the food processor and freeze it in single use aliquots. That's fine for daily kind of use, but for fancier stuff I really like garlic thinly sliced. Unfortunately, what used to be easy is becoming more difficult. My hands often shake and cramp up when I try to do fine, detailed tasks. To make matters worse, I have cut myself several times in recent weeks.

I'm considering getting a mini-mandoline like this: Garlic Slicer Is there anything in particular I should look for in a mandoline for very thin slices? I don't own a mandoline of any type, so it would be sweet if I could find one that handles garlic well and can do bigger slices too, like potatoes for a gratin.

In the meantime, does anybody have any good tricks for slicing garlic old school (with a knife and cutting board)? I find that if I try to do more than one clove at a time, they slide around on the board making even slices difficult. Even one at a time, I find it hard to hold the last half of the clove without risking a trip to the emergency room.
For the general case of cutting vegetables, I will always recommend a mandoline. Cutting with a mandoline vs. knife is like drawing a straight line with ruler vs. without - even though very experienced people can get good results both ways, using the mandoline is always quicker and more precise. And for anybody whose fine motoric skills are compromised, the mandoline adds even more value than for the average person. 

But the main disadvantage of the mandoline is that it doesn't work so well with the "butt" of the vegetable. With a normal-sized mandoline, I usually start using the cap when the food is worn down enough to pass about 4-5 cm above the blade, and because the cap is fiddly when the food is too thin, I leave the last 1 cm unsliced. There is no problem with making paper-thin slices of something large like an apple; but I would be wary of slicing something smaller than a garden radish on the normal mandoline, and wouldn't attempt a single garlic clove. 

The small garlic mandoline looks like it is designed to solve this problem, as a video of it shows that you can push it down inside a holding "cell" instead of having to rely on a nail to hold it in place as with traditional mandoline caps. But it might still lead to large butts (which you can of course process as per Kate Gregory's answer). 

Another thing important about a mandoline is that it should stand on a surface by its own. Mine has a rotating frame in the back which lets it stand stable on the counter, like a tablet holder. I only have to move the vegetable while the mandoline remains stable. Some have holes in the bottom edge so they can be put on a bowl rim. I can't see such a mechanism in the one you linked. If it requires the use of both hands (hold it stable with one hand while slicing with the other), its usability will be diminished a lot, especially when you have trouble with muscle coordination. You should try to find a model which can stand stable on its own. The person in the video does not use such a mechanism, maybe you should write to the manufacturer and ask if it exists.