I am an avid and insatiable learner.
I build things, design things (AutoCAD and other), make things, decorate things, do landscaping, woodworking, lapidary and geology and other things.
I study languages, sound wave physics, historical gunsmithing, psychology and sociology, etc.
I kayak, go target shooting, and otherwise try to make myself useful in some way or another, and to keep busy.
In case it was in doubt - cats and other fluffy things are God's gift to humans - and cats, at least, know it. ;-)