One of the things I like to integrate into tabletop roleplaying games that have magical spells is the ability for the caster to describe, to some degree, how that magic manifests. I was recently pointed toward a video on YouTube, and I somewhat apologize that it is actually a Samsung commercial, but it has such neat CGI work added to a very cool display of manual dexterity that I felt like sharing it. If a player decided that this was how his character cast spells, I would enjoy it immensely. Imagine a character "building" a wall of force in this manner, or any number of other spell-like effects. Take a look!