Wife wanted to visit the youngest and his family for Halloween last year, and.........wanted to go Steampunk for our costumes. I was tasked with building our hand cannons to match our outfits. Steampunk is a retrofuturistic sub genre of science fiction that incorporates technology and aesthetic designs inspired by 19th-century industrial steam powered machinery. Yup, I looked up the proper definition.
Did all of this in a weekend using nerf guns and leather materials obtained from Tandy Leather. I had no idea what I was doing and let my inner 12 year old guid my hand.
My prop in the raw
The wife's, after I painted it with flat black paint
Finished products
Transporting these thing on an airliner was a totally different adventure......��
This is how I chose to pack them... in a locked container.

Included a letter stating they were costume props and non functioning with my contact info and flight info as well.
Basically, per TSA, I could carry them on since they were props/toys. Wasn't even going to go there.
It was a fun project and they now hang on the office wall next to our vintage Goonies framed movie poster.
Cheers