This set of Magnetix is pretty basic, comes with some magnetic ball pieces and some short straight pieces in primary colors. A great set just to add some extra pieces, nothing too fancy here, just gives them more to build on with.
My youngest got a large set of Magnetix for his birthday last year, and my oldest got 2 smaller sets for his birthday last month. Yes, they are small pieces, and yes I find them all over the floor, but that's no different then the Lego and K'nex which end up all over as well lol.
Being a mom of boys I love building toys for them, it's something they can sit quietly and concentrate on, which is great for mommy because it's a lot quieter then some of their other toys, but it's also good because being boys they definitely are lacking in the department of being able to sit still and do something, the Magnetix force them to focus and use their brains to figure out in what direction they would like to build.
Magnetix tend to be pretty expensive for not a lot of pieces, but I have found that for my boys they really haven't required a lot of pieces to keep them happy and keep them playing with them.