This has probably come up before but I thought i'd share it anyway :D
So exiting whiterun I went to the Khajiit trading camp and turned right towards halted stream camp. My smithing was 28 at the time. About half way I noticed a small dark pond with a skeletal hand poking out holding a sword. The sword was dwarven! I decided to test wether the swords were random or not. I noticed the higher my smithing the better the sword. This was the first easter egg I found. So, what easter eggs have you guys run into?
The bound bow is not in that cave, but you can find it in a bucket at a fort. If you're interested, I wrote a detail description of its location called Early Conjure Bow in the Tips and Tricks Group .
Not really an easter egg, just a weird random encounter, but still one of my favorites is the little guy I call Explorer Chicken... the first time I bumped into him was on a road east of Riften, just a lone chicken walking down the road not close to any settlements. I followed him for a while until a dragon attacked and I got distracted. I've also run into him out in the wilds of the Reach, far west of Dragon Bridge and not even on a road, just strutting around. I also found him near the shrine of Azura, I usually try to follow him but he never really goes anywhere, just keeps on walking.