Make a cane plantation, then buy about 1000$ worth the equipment.
Trust me, it is not a good idea. One, it cost time and tools. Two, they won't work very well unless you can keep the right thickness and three, it's impracticle.
You can keep your reeds longer by keeping two and alternating them every time you play, use the reed guard, squeeze the spit out when your done. My reeds usually last for one or two months each.
Why would you want to do that?
try to save money and just to be able to do it and customize the reeds