I agree that store bought hardware can be fast and inexpensive but if you want something to do, use kleats. Norm used these all the time.
Cut a 1/4 x 1/4 groove around the inside of the skirt, 1/2 inch from the top edge. then make kleats from 1 x 2 harwood about 2 inches long with a rabbet on one end of 1/2 deep by 1/4 long that will fit the groove. Pre-drill counter sink and go.
Another meathod I like is to simply pre-drill through the top, counter sink deep, screw then fill with a dowel. When stained, it shows a nice detail which indicates home made.
Recently, I made a platform for a speaker. 12 x 18 x 24 inches. It is just a hollow box. The sides are painted gloss black and the top is amber shellac. Because of where it was going and the simple design, I mounted the top with glue and black fine thread drywall screws, that are flush with the top. They add detail that complements the black sides.
Good luck and keep the dust down. Bill