Finding wood cube

That's a good idea- you can make you own from some scrap wood

Actually, since the 6th side will be on the floor, it becomes unnecessary. Plus, a flat surface on carpet is unstable, while on a bare or hard floor it will wobble. So you really only need 5 sides. Having said all that, the gluing, sanding ,and painting takes this out of the realm of "easy" as far as projects go. I would urge her to find a cube already assembled. It doesn't have to be a di, (singular of dice), find a cube of appropriate height, buy some paint and paint it. Bingo! You've avoided hours of frustration and you have your table in one day. As for where, I don't know where the reader lives, so thats difficult, but there are so many decor stores now, that it should not be difficult to find. Google decor stores, get phone numbers, call and inquire about decorative cubes of the size you want. When found, go buy it and paint away.

Thanks Evestar for your advice but I want these cubes as decorative items. I think they would be cute. Plus when we play Mah Jongg (in which we do use dice) we need two little snack tables and they could maybe serve for those, but really I just want them as a decorative accent.

You could always put it up on legs like bun feet or make a platform for it. I did that with a lamp I actually added round legs to a thick piece of wood and used it as a platform for the lamp. Or buy 2 cubes of Cynthia's and stack them for a 30" table.