Build Your Own Tumbler

Let's start from the very beginning as it is a very good place to start.. LOL But seriously let's start with picking what type of cup you would like. 

Depending on the effect you are wanting for your cup here are some suggestions:

If wanting to do a lava drip I would select the 40oz, 24oz or 16oz tapered in order to get the desired effect.

If wanting a snow globe or a honey drip that can really be done in any cup to be honest.