Random block generator

Imagine, in the launcher there's a tab and at the bottom of it there's a generate random block button and when you press it there is a random block, for example you could get blocks like brick, stone, sponge, dark prismarine stairs. then after you get those randomly generated blocks you have to come up with what to build, a fountain, a bridge, a house. just whatever you want to make only with the randomly generated blocks.