I haven't had any eyebrows for three years now. I suspect I never will have thanks to chemo. I am not a person who likes to fuss too much drawing things in, but a quick couple of lines with an eyebrow pencil is really easy if you get the right ones. The best one I've had is Hourglass. It's expensive but it wins hands-down. I've had a few of those, but when I was feeling a bit poor I went onto ebay and found some cheapies that were similar. I go and buy half a dozen at a time and keep one in every handbag and bathroom drawer just about. The ones I have at the moment are called 'Drawing Eye Brow' and have a blunt angled drawing tip on one end and a brush on the other.
I will tattoo mine one day when I find a good place around Brisbane somewhere. I don't want to just go anywhere.