Here are some great sites for awesome wall stickers.
Another great thing to do is to get some colored contact paper and draw a design on the back, cut it out, and stick it on your wall! Instant custom wall stickers! Good luck!

75pc. Lighthouse Theme Removable Wall Sticker Decals by Collections Etc $6.97 Transform the look of any room when you decorate walls, furniture, windows and mirrors with these colorful decals. They re ready to use just peel and stick. Each is removable and reusable. Features 5 sheets (total of 75 decals) of lighthouse-themed artwork that conjures up an oldfashioned, historical look in any room. Sticker sizes range from 2" x 1/2" to 5" x 4".......

Coffee Cup Kitchen Removable Wall Decals by Collections Etc $8.00 Coffee artwork decals make a fun and fast way to perk up your walls, cabinets, appliances and more. Easy peel-and-stick application won't harm surfaces. Set includes 48 decals. Stickers measure from 3 1/2"H to 5 1/2"H. Each is removable and reusable.......

Vinyl Farmyard Cow Spot Removable Wall Decal Stickers by Winston Brands Give appliances, furniture or even your car a delightful down-on-the-farm look. Simply apply the easy-on vinyl cow spot stickers to any smooth surface for an udderly moo-velous transformation that's sure to milk plenty of smiling appreciation from all who sees them. Made of vinyl and the whole sheet measures 22.30"L x 15.50"H......