any sound-activated 'small scale' strobe lights for home use?

hey everybody, i'm holding a massive pregame at my loft for Armin Van Buuren in Philadelphia on May 10th.. i have somewhere in the range of 40-50 people who are already confirmed (with guests invited as well).. i'm looking into throwing down a hardstyle, minimal electro pregame at my place before hand (yes, i know we're going to a TRANCE show, yet i'm still looking to showcase my DJ skills).. just looking to familiarize all my friends with my 'sound', and get everyone hyped before heading out to Festival Pier (outdoor 'festival'-style venue)..

i was hoping to get a recommendation on 'sound activated' strobe lights/colored laser lights (preferably under the cost of $300-$500/US American Dollars.. I have a set of Pioneer CDJ-2000 Nexus tables, connected to a DJM-900 Nexus mixer.. i play exclusively from USB flash drives/SD cards (no laptop involved).. and was hoping to find some semi-high quality effects that will compliment my set nicely.. but without having to connect additional cables to said effects.. just looking for something to add to the ambiance..

i'm not looking for "top-of-the-line" gear here.. just good enough gear to throw a wild party/pregame.. most of the strobe's and effect's that i've researched thus far require connection from controllers to effects, which i am hoping to avoid..

are there any "freestanding" strobe light/dj effect tools that can "feel" the sound of the music playing, rather than having to connect these to a series of cables? (the easier the "plug-and-play" value, the better).. thanks everyone! looking forward to hearing your responses, and if you're in the Philadelphia area, feel free to send me a PM and join in my Armin pregame!!

EDIT: also, if there are any effects that are easily connected to a pair of CDJ-2000 Nexus' & DJM-900 Nexus, without the use of a laptop, those recommendations are welcome too!! thanks!