^Or better yet, Creepers are attracted to broken eggs so you can bait them in traps or distract them while you make a run for it!
I wouldn't mind a better tool for extensive tunnel digging like a drill or a laser or something. Just to cut down on the time it takes to dig out large projects. Just to make it a challenge to build and not too much of a game breaker it'd have to require some difficult to acquire ingredients...like say a diamond, a fair bit of iron and perhaps some redstone and/or a furnace for power.
Or make it easier to obtain TNT for mass blasting.
(No, I have not yet built a Creeper trap. Maybe I should?)