Mothers Day Gift. What to ask for?

TripMom

My husband asked me what I want for Mothers Day. I want to start doing more lifting to improve my arms and upper body. We currently have dumbbells from 2 lbs - 20 lbs that I do some exercises with. I know I need to change my workout. I want some sort of long barbell that I can do some lifting with. What type is best, universal or standard? Where is the best place to get one? Best way to learn? We have 4 small kids so we work out before they wake up so going to the gym isn't an option for us.
Thanks in advance!