This is a simple one that i am using from yesterday for 1.8 I dont think it is the same for 1.7 though.

SEED: Spetsnaz

You spawn in the swamp biome. And you start near a bunch of the needed suplies, many trees, stone and right under you there is a abandoned mineshaft. If you walk a little in front you will see a lava pit randomly in the middle of grass. And all around you is water and other island places. All around you any way you go if you keep running for a while you can find a village or mineshaft. I found over 2 villages within 5 minutes and a bunch of mineshafts spread all over the map. It is mainly for adventure because that is the funnest way to play on this seed. You can use it on creative but it isn't too fun. Also in the minshaft under you there is a monster spawner but be very careful the spawner spawns BLUE SPIDERS! they will poison you and gradually take away health i suggest taking only neccisary items when going into adventure and make sure to keep you house with a roof. Those pesky spiders can climb walls and get into your house.

Please give feedback if you enjoy the seed or even if you hate it. Thank you.