By changing your lips and air speed you'll be able to play a few different notes but not the full range that valves give you
Unfortunately I would not recommend it. It is very hard to play, even with seven years of trumpet experience. If you are interested in learning trumpet, I would check eBay for a used horn in decent condition, that may be your cheapest bet!
Remote shutter trigger for Digital Cameras
How to Strap a Leaf Blower Engine to a Bike and Go Fast
PEZ Attachment for Camera with "Hot Shoe"
Recycled 55 Gallon Barrel Chair
How to Make Playdough (Play-doh)
Blood Spurting Knife Wound
The Bike Lite Glow Using CCFL
bicycle head light
No-Solder, Funny Robot in Minutes (Bristlebot)
Simple Metallic Laptop Stand
COMBO USB DRIVE WITH ALTOIDS CAN
Foil Welding Machine
Recycle Old Watches
Recycle Old Light Bulb
Top Banana Bike
NES Cartridge External Hard Drive
How To Make a Sweet Ipod/Electronics Case
Pink Eraser USB Flash Drive
DIY Glow: Ground Effects Lights For Your Bike!
Crush All Those Who Stand Before You, The Environmentally Friendly Way.
Glowing video tape USB hub
RAM Comb: Silicon Sweetness
Make A Clay Ocarina
Bicycle Camera Mount for under $1
My Apple iWipe
Muiltple Wiimote mods all in One.
UPS Hack! Hide your..
Real Thumb Drives!
Typewriter Computer Keyboard
Repairing a Computer Keyboard
SNES to Parallel Port
Circuit-Bent Big Mouth Billy Bass
Super Mario Bros Inspired Wii with USB base
Tilt your Aluminum Apple Keyboard
USB Hub Monster
Lego USB Drive
1 Gig Flash Drive Mini Cooper
NES Controller MP3 Player
Nintendo controller into a PC card reader
Build a Nintendo NES PC