I really enjoyed the early chapters of xxxHolic. I was wondering if anyone could recommend something like that. I'm not really sure what it is I liked about them though so...

I Wish... is a tad similar, with the whole wishes/client aspect.

Natsume Yuujinchou gives off the same feel if you mean that but I'm basing this off the anime versions.

http://gaminglagoon.com/?ref=118157
free stuff like xbox online, etc...

Yumeyume Kirakiradou semi like XXX, but a lot brighter and a happy ending~!

As if handcuffed, I'm bound to the memories of you...

Tokyo Babylon had a similar feeling to me (it's also by CLAMP)

Pet Shop Of Horrors is basically the same plot suggestion and the story development, if you can say it really develops in both stories, are very similar, you'll probably find more of the same stuff, but notice that pet shop came before xxxholic, any similarities are clamp's lack of imagination