Some novel garage speakers using plastic gas cans and a 2-way speaker kit. Standard 5L/1.25gal gas cans fit a 2-way 6.5" woofer/tweeter kit perfectly. As an added bonus, the pour spout serves to release pressure in the speaker can. You can get everything you need for ~$69 from Amazon and/or Home Depot.
If you don't have anything to plug the speakers into, here's my approximate setup:
I wired up the speaker kit components before delving into the enclosure. You might want to do the same to see how everything will fit together. The Pyle kit comes with everything you'll need except the terminals, including the +/- wire. Just wire the woofer, tweeter, and terminals to the corresponding +/- pins on the crossover. Test it out with the amp/stereo you'll be using. You may initially feel that the speaker isn't loud enough, depending on your amp of choice, but I promise when you get everything in the can and two of them side-by-side, it will be more than satisfactory.