It seems that no product escapes the opportunity to promote a company's logo and the more fun the promotional item is the more fun the perception of the brand. That can only be a positive for your branding.
What can be more fun than a selfie stick? The company name and logo appears on the handle so it is very easily seen. What's more, if you go for a custom selfie stick the moulding at the top of the handle is custom made into the shape of your logo or any shape you choose and you can't get better branding than that.