When you're ready to get really creative, you may wish to try a guitar synthesizer like this PG-380.
Matt Olson's vintage Casio is one of the earliest full functioning guitars that actually has a full on-board synth module. This one's for sale, & you can contact him direct at:
brahmancomputer@gmail.com. I beleive he's looking in the $600 neighborhood. The core of this guitar itself was subcontracted from Ibanez to be the basis of this product line, & you'll find that it's a great guitar in it's own right. More pictures available at:
https://picasaweb.google.com/108077002384960764916/CasioPG380?authuser=0&authkey=Gv1sRgCOvLiaGGiK3NvwE&feat=directlink
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