Hey there, Shawn!
Welcome to the Disney Parks Moms Panel, and thanks for your awesome question. I just love viewing and purchasing Disney-inspired art pieces at the Disneyland Resort. My home is filled with fun pieces that remind me of my many Disney vacations.
Disneyana in Disneyland Park and
Off the Page in Disney California Adventure Park offer such an amazing gallery of pieces that are available to buy. Plus, you can even view a digital art gallery here for even more art pieces that are offered. Both of these shops offer semi-custom "made-to-order" Character sketches by artists in these shops. These can usually be ordered and made same-day with the artist. You can add some customization to these pieces in my experiences. Disneyana also offers customized "Park Icon Sketches" by artists of iconic Disneyland locations and attraction as well as extinct attractions and park Characters. I can't even count how many of these are on my wish list! For example you can get sketches of the Country Bear Jamboree, Moonliner, the original "Redhead" from Pirates of the Caribbean and so much more.
If you love unique Disney art, I also recommend stopping by
WonderGround Gallery in the Downtown Disney District. I love that on many days you can even meet the artists who create these masterpieces and have them sign their work. They make such unique souvenirs and gifts!
I hope this helps, and please return if you have any other questions. Have a magical day!
-Jennifer