I live in Austin and here are the nearby locations for kiting:
Kitebuggying:
Old Settler's Park in Round Rock, TX
Northeast Metro Park in Pflugeville, TX
Kite Landboarding:
I like Zilker Park in Austin, TX (best turf ever! winds are shifty/gusty, watch out for peeps/dogs)
Kiteboarding on water:
Belton Lake in Belton, TX
Lake Pflugerville in Pflugerville, TX
Lake Travis in Austin, TX
Canyon Lake in Canyon Lake, TX
Lake Buchanon West of Burnet,TX
You might find other spots, but these are the main ones.
Kites:
2012 TS 7,9,12/2007 Waroo 3,5/2009 Kahoona 9.5
Flexifoil Ion 2 8.5
HQ Hydra 350
Naish Helix 2, Cult 3,4.5
Ozone Zephyr 17m
Rides:
2011 Best Profanity 134, Cabrinha Kiteskate, Cabrinha Nugget, 2k9 Cabrinha Plasma 146x50, 2k9 Flexifoil Delta 139x41.5, 2011 Slingshot Darko 135x41,
Slingshot Scud, Tona wakeskate, Flexifoil Flexdeck, MBS Pro 90, MBS Ambush x 2, some oldskool buggy