Even though they're inexpensive and outdated, my original Fox ears and Fox Tail I can never part with. I still wear them on occasion but they were the very first items I got back in 2004 and I've loved them ever since
Probably Golden Laurels. ;3 I quested super hard for them! Or dragon helm, it's my favorite item on Gaia and the first item I quested but a Gaian gave it to me, haha. I was super shocked and will never let it go! <3
Layla and Majnun because I fell in love with the story behind them. In terms of items I use a lot my Nightmare gen 7th and Compass of Seidh gen 8 because I use them a lot. I have built whole outfits around those two. Also anything I have with wigs or contacts. Love those items.