I finally found some inexpensive bed sheets to replace my old set that were of decent quality. These cotton sateen sheets are 300 thread count and luxurious feeling. The green sheets look pretty nice with the existing purple duvet cover and purple pillow cases.
The boas and cloud act as my headboard. Normally the body pillow supports the purple ones or they fall in the back. Ethan sort of cooperated here, but not very well. He insisted on grooming.