Do you have a basement? A basement is about the perfect temperature year round to age beer. My basement would go to about 50F in the winter and 60F in the summer. Just stick it in a dark place, date it and let it go.
I would make sure to crack one open every so often and take notes to track the flavor changes.
Primary: Apfelwein, Raspberry Lambic, Experimental Wheat cider, IPA
Keg 1: Hefe
Keg 2: Irish Stout
Keg 3: Peach Kolsch
Keg 4: Empty
Bottled: Bourbon Vanilla Porter, Chocolate Stout