Hanging Rainbow Hearts - A Colorful Felt Decorative Garland. Rainbow decor by therainbowroom
Circle Mobile Purple Lavender Fade Baby Crib by littlenestbox
White/Black/Gold is the new Red heart !
Pink Grey Gold 10 ft Paper Garland by DesignElementsByErin on Etsy
Felt Ball Mobile Baby Mobile Felt Balls Cot by LLcoolHDesigns. Looks reasonably easy to DIY!