Davin, You aren't alone. I've been in SL since 2005, 2007 on this avatar. I recently loaded the grid up on my laptop after being out of world for over 2 years. Of course when I left, I had sold my island. I downgraded to basic (learned my lesson with canceling an account w/ the 2005 avatar). I used to DJ, create, photography, terraform/landscape, etc... I am fascinated that you have left your land the same for all these years LOL like someone else said, I would clean the slate (land) and rebuild every month or so.
Now that I am back on the grid... I don't know where to start. I loved listening to music, maybe I will check out some talent. I loved to build, but things have changed since I created homes & jewelry, so I have some learning to do if I want to go that route again. Definitely have the creative itch, tho, so if you need some help with your land, look me up! Most of my friends have moved on while I was gone, so I definitely have free time in SL, when I am there.