I suggest a bounty for:
the first RC toy built with Devcoins
the first RC robot built with Devcoins
the first RC flying machine built with Devcoins
the first Arduino robot built with Devcoins
the first AI robot built with Devcoins
the first of each kind of alcohol, made with Devcoins
the first cell phone clone made by Devcoin
the first digital screen made by Devcoin
the first keyboard made by Devcoin
the first mouse made by Devcoin
the first motherboard design made by Devcoin
the first Home Made PC made by Devcoin
the first Air filter made by Devcoin
the first meat alternative made by Devcoin
the first cheese alternative made by Devcoin
the first milk alternative made by Devcoin
the first new breed of dog made by a Devcoiner (not hard, just crossbreed for a few generations. And other things like "Labradoodle" is even simpler to figure out and copy with other breeds)
the first new breed of cat made by a Devcoiner
the first new breed of hops (for beer) made by a Devcoiner
the first new breed of lizard made by a Devcoiner
the first skateboard 100% designed by a Devcoiner
the first alphabet and language created by a Devcoiner that is at least as intricate as English (like J.R.R. Tolken's made up languages)
the first breed of fruit made by a Devcoiner
the first jean design made by a Devcoiner
the first T-shirt design made by a Devcoiner
the first suit design made by a Devcoiner
the first bulletproof gear made by a Devcoiner
the first Hot Sauce made by a Devcoiner
the first Green screen video made by a Devcoiner
the first Blue screen video made by a Devcoiner
the first Green Screen background photo pack made by a Devcoiner
the first Home made vinegar, made by Devcoin
the first Devcoin "guide to reading schematics"
the first "Quantum Space lock" performed by a Devcoiner

All sensors should have a bounty for sensor creation as well as creation of measurement system (if we end up using them as bounties):
the first Voltage sensor made by a Devcoiner
the first Electric Current sensor made by a Devcoiner
the first Light sensor made by a Devcoiner
the first Photogate sensor made by a Devcoiner
the first Force sensor made by a Devcoiner
the first Sound sensor made by a Devcoiner
the first Motion sensor made by a Devcoiner
the first Magnetic Field sensor made by a Devcoiner
the first Temperature sensor made by a Devcoiner
the first Oxygen sensor made by a Devcoiner
the first Ph sensor made by a Devcoiner
the first Conductivity sensor made by a Devcoiner
the first Turbitity sensor made by a Devcoiner
the first Soil Moisture sensor made by a Devcoiner
the first pulse sensor made by a Devcoiner
the first ECG sensor made by a Devcoiner
the first Spirometer made by a Devcoiner
the first GSR sensor made by a Devcoiner
the first Blood pressure sensor made by a Devcoiner
the first Respiration sensor made by a Devcoiner
the first Dynamometer made by a Devcoiner
the first UVA sensor made by a Devcoiner
the first CO2 sensor made by a Devcoiner
the first Galvanic Skin Response sensor made by a Devcoiner
the first Surface Temp sensor made by a Devcoiner
the first Acceleration sensor made by a Devcoiner
the first Speed sensor made by a Devcoiner
the first Humidity sensor made by a Devcoiner
the first Barometer made by a Devcoiner
the first Nitrate sensor made by a Devcoiner
the first Ammonium sensor made by a Devcoiner
the first Chloride sensor made by a Devcoiner
the first Carbon Monoxide sensor made by a Devcoiner
the first Calcium sensor made by a Devcoiner
the first Salinity sensor made by a Devcoiner
the first Infrared thermometer made by a Devcoiner
the first Flow sensor made by a Devcoiner
the first Rotary sensor made by a Devcoiner
the first UVB sensor made by a Devcoiner
the first Calorimeter made by a Devcoiner
the first Force plate sensor made by a Devcoiner
the first  Drop Counter made by a Devcoiner
the first  sensor made by a Devcoiner

Also:
Any new Raspberry Pi use that gets discovered
An ASIC machine
A perpetual motion engine
Put a DVC commercial on TV
A Devcoin book for free on Kindle
A Devtome book for free on Kindle
A way to declare that you would like your articles to be submitted as free kindle books
A way to submit your articles to be turned into free Kindle books
A phone app that tracks DVC price
A phone app that is a DVC wallet
An app that RSSs this thread
An app for reading Devtome articles
A website that asks for emails and once a month send out a page of links to new DVC articles
A website that makes it easy to RSS any author you like on Devtome as well as Devtome in general if you want
A Devtome article designed to operate like a forum. (Home page, categories, sub categories, etc) for us to all post in
Find a publisher that will review Devtome articles
Create a Devtome magazine that people can get mailed to their house for a small DVC fee
A Devcoin facebook game, or Devtome Facebook app
A DVC memorabilia blanket
A toaster that toasts a DVC symbol in the bread
A DVC fitted hat
A DVC strap back hat
A DVC backpack
A DVC hoodie
A penini press that presses DVC symbols in the bread
Different styles of DVC T-shirt
A DVC lanyard
A DVC flag
A Podcast that says "Sponsored by Devcoin" in every episode