Etching isn’t super-hard, but does require some sensible safety- gloves, goggles & apron. The hardest part with bottles is getting your stencil to sit on the curved surface, without any gaps.
I use an acidic etching cream. I dab it on with a paintbrush. Here is an example of a starter kit. https://www.amazon.com/dp/B001AQPMCO/?tag=thshde-20
Let us know if you try it. At the risk of stating the obvious, read the directions carefully first & watch a video or 2.
I refilled my shaving soap bowl. Then I punched 3 extra holes in the leather belt I use with my quiver.
What Sara was too modest to mention was that she punched these holes by tying the belt to an archery target and then hitting the belt with her arrows from 300 meters off.
Not sure if manly at all, but ..... We took the Outback into the mechanic (good friend) for an inspection and to check the brakes (grinding). He called to tell me the brakes were bad (knew that), tires were shot (was hoping to stretch them to September), and ball joints were really sloppy (didn't know that), and all together it was going to cost me $1600. He was feeling rather bad, so I reassured him "Terry I trust your judgement, so go ahead and do the work". I'd normally do the brakes myself, but just had knee surgery recently so figuring the work we're getting done ..... it's cheap. We out right own it, so I figure it's a lot cheaper than car payments. I don't mind spending the money on a good investment.
I feel your pain, but agree that keeping a good, paid for vehicle running is smart. In March I dropped $2400 to have head work done on my Tacoma. It’s 24yrs old, but a desirable 4x4 that I’ve owned since day one and know the whole history..............which has been nothing but respect and servicing. So I hated dumping money into it, but it’s got another 250K Miles in it at least, so I had to bite the bullet.