i think my school did this in 04 (our snare tech was messed up)
snares take left traditional and hold it horizontal and then put you right bead to your nose and run the but of the right stick across the left stick

thankfully our BD never noticed but then again we did get a new snare tech in 05

there is a very good video of Star '93 doing this. the tenor players 'snort a line' during a fast snare triplet roll toward the end of the show.

our drumline has a few traditional visuals that we try to do every year.

one is the shopping cart, which the snare line hold their sticks in front of them like they are pushing a shopping cart and pretend we are taking things off shelves and dropping them in.

another is 'random dance' visual....i think this one is self explanitory.hehe.

in '06 during the last push in our Super Man show, the snare line did an 'Abortion' followed by a 'Come on down the price is right'....it was pretty good.

in '06 during the bass solo in Bunco Rules, the snare line did the 'BaseBall' visual...it looked really good. I have video of it somewhere and will post it when I find it. The video of us playing Bunco I have on youtube actually has the camera focusing on the bass' during the solo, so you miss the visual...oh well.

yup we did that one too in 04

a cool one to do during holds is taking off your drum and holding it victoriously abover your head. or if you cant support that, kneel and hold it in front of you. and theres also the one where you take it off, stand it vertically with one hand on the drum and the other on your hip with your chest out. very triumpant. you can point while doing that one too.

I am a fan of the "DJ Visual" on the Tenors. With 2 sticks in your right hand, you put your hand to your ear. With your left, act like you are scratching a record on drum 4.