Dan Wagoner modified his first guitar (a Fender stratocaster) to include a weird sound generator analogue synth. The synth control knobs protrude from a hand made pick guard made from a motherboard. Three switches have been mounted in the fingerboard. This instrument liberates the synth player, allowing them to assume outrageous poses previously reserved for guitarists.

This giant Flying V style guitar was seen at the New York guitar show. The massive scale length means you can get almost subsonic notes on it. An even bigger guitar was made as a school project at the Academy of Science and Technology, Woodlands, TX. It is over 43 feet long but still playable.

 A 9V battery powered practise amplifier housed in a copy of the bible.

Via: Flickr battery powered bible amp

The Hoverbucker is a creation of Ronnie Hinton and Daniel Diaz Brauch which started out as a Squier Bullet stratocaster . They took the middle pickup and mounted it over the neck pickup, to give a sound like a humbucker. It is mounted upside down, with the top facing the strings.

Looks like some lost their assembley instructions from Warmoth!

You can buy this if you want for $400.

Between The Notes is an original work by Shannon Couture, an artist and musician from Western Maine.

Its a ukulele amplifier housed in a coconut. Perfect for that Pacific Island vibe.

Link: Steve Lodefink's Crusoe Amplifier

Mike Shubic worked in marketing for 16 years, then one day he decided to quit the day job to make and sell outdoor sculptures. This giant guitar is one of his creations: it measures 12 feet by 4 feet (although he can make it to any size). It is made from metal, and Mike says it can actually be played. It is still available for sale for $6500.

Tear down those curtains and make me a guitar! Browsing Etsy again I found this one-off electric guitar said to have a strat look and telecaster sound. The unique selling point is the drapery finish: covered in curtains its the 21st century Floral Jem. From the picture it doesn't look like the fabric is sealed: I hope its not dry-clean-only!

The Alumitar was created by Paul Rubenstein. Imagine a guitar neck with no back, the curve of the fretboard going all the way around, now take away the frets and you have the Alumitar. It looks like it is made from an aluminium tube, it has 10 strings evenly spaced around the outside of the tube.

This is the musical equivalent of the Swiss Army Knife (the knife with a blade or tool for every occasion). It is the child of an unnatural coupling between an Ibanez destroyer 2 bass and a Yamaha KX-5 midi controller keyboard during the early 90s (those were crazy times - we all did things we would rather forget).