Here's the list I promised. I removed all but one that was specific to me as well as the one I choose (sorry, I want to try and have something unique on my car

). The plate I ordered had a 6 character limit, your state/style may allow more. Also there's lots more fun to be had using 2 H's and treating them as silent. For some that appear to be more obscure ones you may enjoy Webster's definition (like hackneyed).
2 AC H2 Too cool H2
2AC4U Too cool for you
4BY444 4x4 for four
8ABMR Ate a beemer
AC H2 Cool H2
GV TNKA GV Tonka (GV are my initials, replace with yours)
H2ABVU H2 above you
H2NUTZ H2 nuts (good with purchase at
www.bullsballs.com)
H2NXS H2 in excess
HHABIT Habit
HHABTL Habitual
HHAKND Hackneyed
HHAVOC Havoc
HHAZRD Hazard
HHEADY Heady
HHEBGB Heebee geebee
HHEFTY Hefty
HHINMT High and mighty
HHIP Hip
HHONKN Honkin'
HHOSS Hoss Cartwright
HHUGE Huge
HHUMMN Humming
HHUMMN Humming
HHUMMR Hummer
HMRNE1 Hummer anyone
HUM2ME Hum to me
HUM4ME Hum for me
HUMMAH Hummer
HUMMYN Humming
HUMNGZ Hummongus
I12HUM I want to hum
MSTR H2 Monster H2
N2H2 In to H2
NTZ4H2 Nuts 4 H2
NUZ4H2 Nuts 4 H2
OHV4ME Off-highway vehicle for me
PHUHN Fun
RDHHOG Road hog
ROLNPN Rolling pin
THUMPU Thump you
TUHHF Tough