Probably "Matreshka" is the most famous Russian thing - it's a wooden doll that has another smaller doll inside which also carries smaller one and this can extend up to 30 smaller and smaller dolls until reaching the smallest tiny doll thingie. They are usually painted in accordance with Russian tradition,
like on the photo above. But these day design studio ArtLebedev.ru has expressed another view on Matreshkas - no using one of their products you can memorize the data measurement units. The biggest doll is called Terabyte and the smallest is... ugh, what's there, smaller than a byte?