I've started a vanilla survival singleplayer world and I'm learning to find mineraft fun again.
My world has a cool little just below surface cave system that I'm turning into my base and I found a skeleton and a spider dungeon, both within 2 chunks of eachother and both accessed from my cave.
So now I'll have all the string and bones I need for a while.
I plan to add some mods in once I do most of what sp survival has to offer, ie. find a good amount of diamonds, go to the nether and possibly the end. I always wanted to play with BTW so I'm thinking I'll install that first. I might also go with millenaire and a couple other mods before I do that though.