Stuck indoors, how can I get a spray paint finish on glass object without dying form fumes?

lol soelo. Great minds think alike.

Maybe try a http://www.mceline-artisan.com/article.html? Not the kind used for wall treatments, the kind where you float a thin layer of paint over some medium and then dip an object in.

okay - we did this is may. January is less pleasant.

I would take some spray paint, your candleholders and a bunch of old newspapers off your apartment property -- to a local park, or a neighbouring parking lot, etc. I went to an arts school in an office building - we spray painted on the public sidewalk outside. We were careful not to get paint on the cement or block traffic, and no one seemed to mind. In a park, stay away from areas for kids/dogs, and it should be ok.

Do a bunch at once with a quick light coat and a towel wrapped around your face and then go for a walk. Then come back and do another coat. You should be spraying in thin coats anyway. Build a decent sized spray booth out of scavenged cardboard (from your apartment's dumpsters?) to contain fumes.

I can't remember what they are called - possibly a stippling brush? it's a kind of painbrush that has all the bristles exactly the same length, and instead of brushing the paint on, you dab it on with repeated little stabs of the tip of the brush. You can get them in any art supply store. Pour your paint into a shallow tray, apply paint to the brush by tapping the bristles into the paint - make sure the brush isn't drippy - and dabdab dab it onto the candleholder spreading it evenly around. It will have a bit of texture, but not brushstrokes. A few coats will help to even out the texture as well.

I've used a sponge for something like this and it worked quite well. I like to use cosmetic sponges; the wedge-shaped ones for preference, and tear off the bottom part of the wedge so that the dappling surface is irregular, so you don't get visible marks from the corners.

Where are you? There are sometimes workshops and art studios that will rent you space, or let you come use empty space, or let you in with a general fee for an afternoon.

A small hobby airbrush with a small spray booth vented outside would work for this [I used to spray plastic models with acrylic paints in my unvented basement without any fume problems], but that's a fair amount of infrastructure to set up if this is a one-off project. I'd second the "do it in a parking lot or at someone else's house" suggestion. Here in Minneapolis there's the Hack Factory communal workshop that might work for this [they have weekly free days].