There are a few different ways that you can go about making a custom glitter tumbler. Perhaps the easiest way would be to purchase a blank tumbler and then simply add your own personal touches with some glue and glitter. If you want to get a little bit more creative, you could try painting or decal-ing your tumbler before adding the glitter. Either way, once you have your base ready, it's time to start glitzing it up!
To add glitter to your tumbler, you'll first need to decide on the color scheme that you're going for. Once you have your colors picked out, put down some newspaper or a drop cloth to protect your work surface. Next, take some Mod Podge (or another clear adhesive) and brush it onto the areas of the tumbler where you'd like the glitter to stick. Be sure to apply a generous amount so that the glitter will really adhere well. Then, simply sprinkle your glitter over top of the wet Mod Podge and let it dry completely.
Once everything is dry, give your tumbler a few good shakes so that any excess glitter falls off. And that's it - now you've got yourself a one-of-a-kind custom glitter tumbler!