As much as fantasy is a part of Second Life, there is very few stores that cater to the "classical fantasy". Sure you can find stores full of vampires, leathers and whips, but for me, that is not fantasy. Grendel's understands Fantasy. Their store is wonderfully laid out, simple in form yet still enough to catch your eye.
The Level one of the yellow section contains things for any medieval home. Not just prefab houses, but kits to be able to design your dream castle the way you want it to look! Level 2 contains miscellaneous items, things that are not quite fantasy, or don't meet the other categories. Level three of yellow contain wings, skins and tech items for your avatar.
In the blue section, Level 3 and 2 comprise of a large amount of humanoid avatars, many that are good quality to meet your need. If your looking for something really different, check out level 1, where plant avatars and items hide among tinies
The red Section is dedicated to avatars and items that are not commonly seen, such as full aquatic items on level three, invertebrates on level 2, and mutants on level 1. As other levels, You can get a shark avatar and cause havoc in someones local pool, or buy your own swimming dolphin for your own
The green section primarily deals with animals not covered in other areas, to include dragons and dinosaurs on level 3!
From this quick whirlwind tour, it is easy to see that Grendel's has one of the largest collection of fantasy and non-standard avatar items available in second life. Visit and see for yourself, and be sure to visit the Freebie section down in the dungeon!