"It's a protection thing. It's a table with hydraulics and legs. Two kids can get in there, and get in on their hands and knees," he explained.
"The table folds, it'll drop, the hydraulics will come together. It's like a brace - it'll help build it," he continued. "That'll protect kids whenever an emergency happens."
He wants to go to college so he can invent more stuff. But first, Bobby is happy to participate in the spelling bee, science fair, social studies fair and other school activities. For the most part, they're fun.
"Except for the waiting, of course," he said.
Hanging around on a stage might be a little stressful for Bobby, but it's old hat for Brooke Lacy, Lincoln County's champion. The fifth-grader at Midway Elementary School also is preparing for her ninth dance recital.
"My favorite type of dance would probably have to be jazz," she said, "because you get to strut your stuff, do what you want to do. Show your expressions."
She finds being the center of attention exciting, and that will probably come in handy when she's touring the world as a music icon.
It's a lofty goal that will take some hard work, but Brooke is confident she has what it takes to make it big.
She realizes the job won't be all roses.
"I think it will be tough to be a pop star. Well, sometimes you can lose your voice, but you have to just go out there. And not everybody makes it," she said.
Not everyone can make it as a speller, either. Brooke also won her county bee as a 9-year-old last year, and she thinks the experience will be crucial in today's challenge.
"Well, I like to spell. And when I get up there, I feel like, 'Well, if I win, that would be great!' " she said.
Other bee contestants have a broad spectrum of interests and career goals.
Michael Fox, 10, a fifth-grader at Valley Elementary School in Fayette County, loves science and wants to be a rocket scientist. Henry Dillon-Whitehead, 13, a seventh-grader at Green Bank Middle School in Greenbrier County, already knows he wants to be a professor of classics.
McDowell County's Marla Brown, 10, a fifth-grader at Kimball Elementary School, wants to be a scientist or a chef. Either one is fine.
All will put their dreams on hold today as they compete for the shared desire of attending the Scripps National Spelling Bee in Washington, D.C.
Participating counties send two spellers each to the regional bee.
Beverly McCoy, clinical director for Bright Futures Learning Services, will serve as pronouncer, and WSAZ reporter Cathleen Moxley will be the emcee.
Judges are Dr. Letha Zook, provost and dean of the faculty for the University of Charleston; Carolyn Dorcas, a retired high school English teacher; and Dr. Mark Stotler, assistant director of academic affairs for the West Virginia Higher Education Policy Commission.
Spellers are to register by noon. A practice round starts at 1 p.m., and the first round of competition will follow.
Today's winner will advance to the national bee May 26-31 at the Gaylord National Hotel in National Harbor, Md., just outside Washington, D.C. The new champion and a parent will enjoy an all-expense-paid, weeklong trip to the nation's capital.
The champion also will receive a $2,500 SMART529 college savings plan through a program of the West Virginia Treasurer's office, the Samuel Louis Sugarman award (a 2013 U.S. Mint Proof Set), a one-year subscription to Encyclopedia Britannica Online and a Webster's Third New International Dictionary.
The second-place winner will receive a $150 cash prize and a copy of Merriam-Webster's Collegiate Dictionary. The third-place winner will receive $75 in cash.
Also helping with today's bee are staff members of Capital High and the Kanawha County Schools Community Education Program.
The regional bee will be televised by WSAZ's myZ TV at 1 p.m March 30.