Pretty curtain tiebacks
Though incredibly tiny, curtain tiebacks can really upgrade the classiness of a room. Tiebacks can be quite costly, but you can make your own fancy tiebacks using ordinary objects at the dollar store. All you need is some cotton rope and clasps.
You can sauce up your tiebacks by braiding the ropes and tying them off at one end. Make sure that the rope is long enough for the clasp to reach while also tight enough to keep your curtains from hanging loosely. Also, try and find a cotton rope color that matches the curtains. White is an excellent neutral color but go with whatever you like.