All of my pipes are entered into a comprehensive database. The pipe's parameters (weight, briar density, style, origin of briar, origin of pipe carving, stem material, price paid, current value, price paid:current value ratio, brand, artisan, etc., etc., etc.,) are recorded, and then a "theme of the week" is established. The possibilities, while not endless, are certainly numerous. This week, I'm smoking pipes from Lithuania with acrylic stems that were carved by an artisan under the age of 40 who's first name begins with a letter in the last third of the alphabet and who has at least two cats and one pet gerbil.
Selecting tobacco blends is a bit more complex.