These three pieces were made in different countries at different times, but together, they make a perfectly lovely mushroom village.
The littlest house, on the left, is only 3 3/4 inches tall. Made in the German Democratic Republic in the 1950s, it's actually a traditional German wooden novelty known as a "smoker". The mushroom lifts off the base, upon which a small cone of incense is set. When lit, the mushroom house is replaced, and the smoke drifts out through the tiny black chimney on the roof. The effect is totally charming, and makes everyone who sees it wish they could hang out in the cozy little mushroom.
The windmill in the middle was made in Japan circa the 1960s, and is actually a bank. There's a slot on the top for coins, and a trap door on the bottom to get them out again.
The last house is from Poland, and dates to the 1980s. It's a nesting item: the top of the mushroom lifts off, and inside are a set of tiny gnome ninepins and a ball, all made from wood.
One unlucky little gnome has to be stored upside down, or they won't all fit.