craftgrrl | how would you decorate and then seal the back of a hair brush or other hair accessory?

My biggest craft inspiration right now is to take premade things and put my own touch to them, like painting a name on it or putting stickers on it and then sealing it. Well if you were to do that, what would be the best paints to use and best sealing methods and stuff considering this is an item that will be used daily, or should you even try that on an item that will be handled lots and in hair lots? Could you try to get some kind of resin and back the brush with resin?

My other thought, was to take casting resin and make little paper weights and stuff with cute images inside them. Like use a pringles lid as a mold and do like that? What should I be aware of about doing that/?

this is the type of hairbrush I'd be trying to personalize with paint and stickers and stuff. It's got a fairly flat back is kind of shiny and metalic as you can see, but it's also kind of curved while being mostly flat , if that makes any sense.