Top 5 for me (and i'm new at this, but the numbers don't lie)
1) Slow down
2) Inflate the tires (in my case, up to the rec'd psi)
3) Coast whenever possible (neutral for me, I don't have the guts for EOC)
4) Only accelerate just enough, no need to mash the pedal
5) Leave early
Driving without brakes is easy for me, mine are almost gone!
I'd do the "over" inflate the tires thing, but mine are bald and leaky