100 Pcs Ear Cover for Shower – Disposable Ear Covers for Hair Dryer – Easy to Stretch, Water-Resistant, Lightweight, Durable Plastic | Comfortable to Wear for Home, Spa, Travel, Hotel and Hair Dye Use

They actually have ear covers for the shower! These are designed for adults but with the elastic they might work… not sure sensory wise how she will like that versus water but could be something? https://a.co/d/0fgLGcqz