Electric Disney Sofia rotary toothbrush for kids 3+ with the flashing light at the back batteries are included but for some of them they will need to be replaced straight away due to long storage time
eBay
2Pcs Adhesive Electric Toothbrush Holder Traceless Toothbrush Stand Rack Wall-Mounted Electric Razor Holder
Aliexpress UK
The bristles and size are ideal for the hands and mouths of children and feature Frozen characters your kids will love. Unique electric toothbrush heads designed especially for kids. Makes brushing teeth fun with Frozen characters.
eBay
Sejoy Electric Toothbrush rechargeable With 8pcs Replacement Head Tooth Brush 6 Modes Clean Whitening Sonic Timer Toothbrush
Aliexpress UK
Only available in the USA!
eBay
360° Automatic Children's U-shaped Electric Toothbrush Cartoon for Kids Silicon Toothbrush USB Charging Blue Light Teeth Cleaner
Aliexpress UK
The Oral-B Junior Frozen electric toothbrush for ages 6+ is designed with dentists for a superior clean. Plus, its round brush head has extra-soft bristles. In fact, 90% of kids brush longer with the app.
eBay
Sonic Automatic Electric Toothbrush For AdultUShaped 360 Degree Toothbrush USB RechargeableTeeth Cleaning & Whitening Brush
Aliexpress UK
With 2 brushing modes including a unique, kid-friendly sensitive mode, this brush gently cleans kids' teeth. It removes more plaque than a regular manual toothbrush. The essential toothbrush to achieve a better & gentler clean for kids 3+.
eBay
4/8/16 Pcs Replacement Toothbrush Heads Compatible with Oral-B Braun Professional Electric Toothbrush Heads Brush Heads
Aliexpress UK
Oral B Disney Frozen Toothbrush Disney Kids Stages 3-5 Years. x2 toothbrushes (random characters)
eBay
SOOENJOY NB-1 Original Replacement Toothbrush Heads Nozzles For NB-1 Sonic Electric Teethbrush
Aliexpress UK
With 2 brushing modes including a unique, kid-friendly sensitive mode, this brush gently cleans kids' teeth. It removes more plaque than a regular manual toothbrush. Not intended for use by children under age of 3 years.
eBay
Replacement Toothbrush Heads With Philips Sonicare Teeth Hx6053 Hx6042 Bm928 Brushmo Electric Tooth Brush Heads
Aliexpress UK
Disney Frozen Electric Kids Toothbrush With 2min Timer And Flashing Light 3+
eBay