What's the big deal? Just look up skewers on Amazon. I found two kinds that fit your bill right off the bat. One was a set of "Steve Raichlen" skewers at around $15 for six 18" skewers, and a set of "Rosewood Handle" skewers which were selling for around $12.50 for four 22" skewers. Plus, long, wide-bladed skewers are available in lots of places if you know where to look.
Get wide-blades so food won't spin on them. Don't buy (or Mickey-Mouse) round-stock, at those lengths it will drive you nuts when you try to cook.
If all else fails, go to a fabricator and have him cut you some stainless 3/8 or 1/2 x 1/16 or 3/32 bar-stock with a 45* angle at one end. You don't need handles, you can use pliers. Unless you know someone with a (rudimentary) metal shop, at the end of the day, it's probably cheaper to buy from Amazon.
You can certainly do better than dowels and coat hangers.