If you go the toddler bed route, cute bedding can be difficult to find. Jaime of Prudent Baby decided to repurpose the unused comforter that came with her daughter's crib set by sewing a custom duvet for it. What a genius idea!
She used one of her favorite fabrics and a snap kit to create truly one-of-a-kind bedding, and the best part is that her instructions can be easily followed to create twin, full, queen, or king bedding as well! To create your own custom duvet cover, follow Jaime's easy step-by-step instructions over on Prudent Baby.
(Image: Jaime of Prudent Baby)

White Enamel Flatwa...
^I second medusa12120's comments. Please add my name to the wait list for this adorable baby girl :)
1) Gimme the fabric
2) Hand over the fabric
3) Where's the fabric
Just kidding..it's Bird Seed by Alexander Henry.
Thank you for the info about the fabric!
I am in love with the fabric. If someone can find it online let me know. Sold out on fabricworm.
My mom did this through my childhood. I was able to choose fabric from the fabric store or a set of sheets (which also can make great window treatments when done correctly). I was always so happy that I didn't have a "department store" duvet.
I hand painted sheets and sewed them to make a duvet in college. I loved that duvet until an anxious dog chewed holes in it.
My method involves finding cheap sheet sets in colour/pattern I like - nice sheets on sale are often cheaper than buying nice fabric, and the width is so much easier to find!
1. Gimme the fabric.
2. Take the kid.
3. I want the fabric.
Super cute. My mom made me a duvet cover when I left for college. One side was a sheet, the other my favorite Indian tapestry from Pier one. Total college pot den decor.
I made 2 of these for my daughter. One for home and one for college. I see that Jaime sewed snaps on the crib sized duvet. I used snap tape, and I sewed one side to each end of the comforter, and the other side to the duvet cover (on the seam allowance, and at the opening). This keeps the comforter from bunching up inside the cover ad it makes it way easier to get on and off for washing.
Love the fabric. I can't think of a single place in my home that it would work, but I want it anyhow! (Oh, and my quilting friend who is into birds would DIE!)
I've sewed many duvet covers and I'm not a great sewer in the least. There's nothing much easier than sewing two top sheets together (we don't use them otherwise) and since they're so fluffy, mistakes are easily hidden.
I am a terrible sewer so I asked my mom to make my younger child a duvet cover to fit the measurements of IKEA's children's duvet cover as they didn't have any in their stores that matched the decor I wanted. She did it using bed sheets we found in a pattern that we liked and I/we love them!
I am surprised that there aren't more of these being sold in general for kids. I grew up using duvets with covers from the time I was little.