Well i try not to leave open scars in my minecraft world so i try to fill in holes made by creepers or harvesting resources like sand (i need a lot for TNT), Also i try to build around cool areas rather than on them. But as for resources i try to be as "renewable" as possible. I have a small forest on my island that i regularly harvest and replant and though i use coal i'm happy to know about charcoal so i don't need to worry about running out of that. Although there are two areas of my map that i have dedicated to GIGANTIC projects, one tall monster tower around 22x22 from bedrock to the sky, and a 2nd tower, more efficient than the first that will cover an area 144x144 from sea level to the sky.