So-called assets in the cryptocurrency systems, e.g. for NXT coin or Horizon coin (which is built upon the NXT software). Download their wallet, there you will see the category "assets".

In principle, the assets sold there could be assets of any type like you describe them, if somebody wants to share this and creates a cryptocurrency asset*. But in reality, the asset system there is quite at the beginning in my opinion and you cannot be sure you can rely on them. But on the other hand, this problem exists in the classic financial market, too. There can be also fraud or lack of success.

Mainly, imho, the cryptoassets existing so far are about business concepts in the cryptocurrencies themselves. For example dealing with cryptocurrency exchange systems which earn fees, then the fees are distributed to the shareholders of the assets. And the software developers need the capital to fund their developing business (crowdfunding).

* It would be interesting if somebody would share a house with a cryptoasset. Then you would own part of it, but you cannot get a part from the house over the internet... but maybe if the value of the house rises/falls with time, the price of the asset will rise/fall, too. But what happens if the house is sold? In my opinion, the asset issuer should then pay out all asset shareholders and delete the asset. But whether that is possible with the current construction of the cryptoassets, I don't know. I doubt it   .