Part of making a game is the experience you gain on your journey to completing it. I feel that the problem with rpg-maker games is that people want everything handed to them on a silver platter. I don't want to sound too negative though, so I will offer some advice.
If you really want to make a unique game, the most obvious way, is to simply make your own graphics. Too many games use RTP. There is no "easy" way to make graphics. There are some that make it easier, but even those take time to learn. I personally use GIMP for everything lol.
Music, there is an awesome MIDI database called VGmusic. Google that
Other than that, making music is probably the hardest thing to do because of how lame the free programs are.
Tilesets are like the rest of the graphics. Sure you might fine some good ones, but the best will come from making your own. You can make it from scratch like others or you can get pieces from existing tiles, and simply re-color them. I personally make my own because I enjoy the home-made look.
Just remember to credit people who ask for it and don't ever steal anything... Other than that, all it takes is hardwork and dedication to make a great game.