And while most custom bike companies used to sell mainly frames that you then had to complete a la carte, the most expensive way to by bike components, they are now offering complete finish kits in a range of quality levels and greatly discounted prices.

FORBES: Why You Need a Custom Road Bike

More recently, Seven, Serotta, and IF have begun offering a slate of complete comment finish kits you can order for less than a la carte, but your dealer still usually gets the parts and assembles the bike.

FORBES: Why You Need a Custom Road Bike

And if you don't trust your own artistic abilities, Spost says widely available pumpkin carving kits, complete with various patterns and stencils, are good to try.

CNN: Carving up a spooky Halloween

Then they began trading information about weaknesses in computer systems and selling software kits to exploit them, complete with technical support and updates.

ECONOMIST: Computer security