Which piece of lab equipment would best be used to remove powders from a reagent bottle?

The correct answer is spatula or scoopula.  

In the laboratories, microspatulas or spatulas refers to small stainless steel utensils, used for transferring, scraping, or applying powders and paste like chemicals or treatments.  

Various brands of spatula are also resistant to bases, acids, solvents, and heat that make them suitable for application with a broad array of the compound. A usual kind would be stainless steel spatulas that are broadly used as they are affordable and sturdy.