[jkrummri]

Hi Paulo

Other then the Midibox and X-Keys I suggested

Take a look at this even easier

Universal Human Interface Device

Universal 12-Bit Joystick Controller BU0836X


Also to completely mess with you up Ergonomic Touchpad - USB Touchpad, Touchpad Mouse, Laptop Touchpad, Tablet Touchpad - Free Yourself from the Routine - The Latest in Economy in Motion

Then just use, Or with your skill level write a HID to MIDI or SDK converter

Hope this helps