Need Plugin to show checkbox for categories (in product)

Im tired of categorie suggestions whenever Im entering category in each product. I just want simple list of categories where I can just put a checkmark and check that category. There is maybe 15 categories and filter/suggestion drop down for each category pisses me off. Is there an extenstion that converst categories and filters

Why just not buy the extension that save 95% of your time working with products and categories ?
Look at my signature

I guess its just easier. There is only one there. And it works good. But only in products and categories. Its called - "Autocomplete No More"