Thank you for all your replies.
I like the idea of they Kenko tubes, but at $200, that's a stretch for me to make financially, ideally I'd like to spend sub $50 at this time, or maybe I'll wait until tax time and get a dedicated macro/close-up lens, I see a Canon EF 50mm f/2.5 for $300. I really don't like to idea of reversing rings and exposing the rear element of my lens, given that I don't have the funds to replace either of my lens should it get damaged!
Again, thank you all for your advice, I really appreciate it!
Polaroid has extension tubes that have been getting good reviews.