Oral-B Stages Power Kids (2 x)For example these. There's a large selection... and the brush heads certainly fit. I also have this purple one for myself and a kids oral B for my 6 year old son. The attachments fit both toothbrushes... so I don't think the basic model plays a big role, more the brush itself. This purple model has 3 speed settings. It vibrates every 30 seconds to give him some orientation... the kids edition only has 2 speeds and only 2 minutes.