One of my favorite gifts to receive is a donation to a shelter made in my name. You can visit an actual animal shelter or donate online. Once you donate, the organization will usually give you a certificate and/or some other type of small token to present to the recipient showing your act of kindness. Your local SPCA is a great place to start, or the humane society's website has a gift donation section. Giving that gives back...I love it!
A subscription to a dog magazine is always a hit for folks who like to read. If you want a monthly magazine, Dog Fancy is one of my favorites and it's only about $15 for a yearly subscription. Modern Dog is a great magazine as well, but only comes quarterly. Both are full of great articles and information for us dog enthusiasts and make the perfect gift.
Just make sure you give yourself enough time to have your gifts shipped in time for the holidays (words of advice from a dilly dallier). Happy shopping!