When purchasing for acquaintances, bosses, and associates who you are not romantically involved with or dating for a substantial time, don't purchase too luxurious a present. Buying a pricey present can send the incorrect message.
For instance, if your mom is a huge fan of traveling and loves skin care, why not get her a gorgeous travel diffuser or miniature serum set? Or, if your mom is someone who always has to have her nails done, an at-home manicure kit is an excellent idea that shows you pay attention to all the little details about her. Whatever it is that makes your mom unique, use that as your starting point and it won't steer you wrong.