Have you ever tried to build a rock tower? I captured this shot next to the ocean but you can do it in your backyard or flat also. All you need is some piece of rock and to take them onto each other. Easier if you start it with the biggest on the bottom but can be more challenging and cool if you insert some smaller one between to bigger also.
Come on, it is really a fun and it reminds me how funny it is to build. To make something stable, timeless. If you can succeed with it, think bigger, do more for yourself. What do you think about a new house?