Fun print/pattern sheets for grownups (babies get all the good stuff)

If you're okay with duvet covers, https://www.snurkbeddengoed.nl/en-us/ has some https://www.snurkbeddengoed.nl/en-us/t/category-1/categorie-beddengoed. I missed the part where you said white with small, repetitive designs. sorry. :(

Pottery Barn Kids is my go-to for fun sheets. In addition to the classic superhero sets, they have http://www.potterybarnkids.com/products/puppy-sheet-set/?pkey=dboys-sheeting&, geckos and http://www.potterybarnkids.com/products/blue-dino-sheet-set/?pkey=dboys-sheeting& this year. Wonderful quality, I love the feel of the PBK sheets I have. The Company Store usually has some very fun designs as well, including this http://www.thecompanystore.com/dog-pound-percale-sheets-and-bedding-set/e9d8-ps-r14.html?start=1&cgid=sheets-pattern one. Tommy Hilfiger markets one or two designs a year that are always fun and are 100% cotton. I've had a wonderful school of fish set for years, I also like their sharks. This year's are all out of stock but you can get the http://www.ebay.com/itm/Tommy-Hilfiger-FULL-Sheet-Set-SHARK-ATTACK-Multi-Color-Sharks-/171437164350?pt=Sheets&var=&hash=item27ea73873e (only one set remaining until they're down to Fulls only). Queen size fun sheets are easy. Try King sheets, I have had to give up all my fun sheets and go with boring solids...anyone have any good sources for cute sheets in Cal King?

Like sulaine, http://www.garnethill.com/mini-print-percale-bedding/bedding-bath/sheets/221436 was my first thought as well.

Can you sew at all, or do you know someone who does? It's possible to buy such printed cotton fabrics at a fabric store and make a set of sheets and pillowcases.

Also found a fantastic (for me) winner at Land of Nod -- http://www.landofnod.com/deep-blue-sheet-set/f14811. Can you tell I love the ocean?

Super cute! In case you want to accessorize your room, the print is based on their super popular (and amazing) http://shop.banquetworkshop.com/product/marine-animals-poster. It comes in lots of versions (including the http://shop.banquetworkshop.com/product/atlantic-sea-animals-print and the http://shop.banquetworkshop.com/product/gulf-coast-sea-animals-print) and they are really nice in person.

http://www.serenaandlily.com/Bedding/Sheeting has http://www.serenaandlily.com/Bedding/Bedding-Sheeting-Fox-Sheet-Set and http://www.serenaandlily.com/Bedding/Sheets-Bedskirts-Blue-Crab-Sheet-Sheet.

I came here to recommend the L.L. bean whale sheets - I have them and loooove them. Anthropologie has pretty sheets - including http://www.anthropologie.com/anthro/product/home-bedding-sheets/28909646.jsp#/. No animals but some nice patterns athttp://www.westelm.com/shop/bedding/sheet-sets/?cm_type=gnav

I was at Ross today and saw some Nautica sheets with a small anchor pattern. I would take a peek at your local discount stores, and also search out Tommy Hillfiger and Nautica. I found these Nautica flannel sheets with http://www.overstock.com/Bedding-Bath/Nautica-Pre-shrunk-Cotton-Flannel-Sheet-Set/9246916/product.html?refccid=O5P4UC6Z2NPLMPCOCTDJVKU4D4&searchidx=1 on Overstock.