Almost anything that is wearable. Except for species specific clothing, which are few and are easily found on many sites on Google.
neomall
* All neopets can wear wearble clothes
A fantastic list of what neopets can where what on neopets can be found at http://www.neopets.com/~Echoh .
http://neopets.com/~oreanos
There are a lot of Neopet wearable clothings, too many to list. However, there are some sites that have lists of all Neopet wearable items. If you would like to see one look in related links.
You can only get wearable items from the NC Mall.
go to http://www.neopets.com/~Echoh
Jellyneo.net to see.
The main ones are potatoe sacks and piles of dung. But most wearable items are only available through neo cash.
Go to sunnyneo .com they have all that... Des
any items that can be bought by neocash or in your newbie pack or backgrounds can be equipped on to a Lenny
The Weblink listed below keeps an updated list as to what items a Kyriis may wear.