Never tried one but it pops right up on a search: https://www.amazon.com/Magnasonic-Professional-Ultrasonic-Eyeglasses-MGUC500/dp/B007Q2M17K/
Diamond Dazzle Stiks and an ultrasonic cleaner for deep cleans!
I am at week 49 and am getting another set of refinement trays next week. This is the travel toothbrush I put in my purse. I have a generic makeup case and I add my Invisalign travel case and a travel dental floss. I bought 2 generic travel case for my retainers (also from Amazon) that I keep at home.
I also bought an Ultrasonic cleaner and use that every morning to clean my retainers. Really helps because I have a lot of attachments. It took too long to clean all those indentations with a toothbrush.
I also had to use rubber bands. My tray changes were on Fridays. I found is less painful to start the new tray Thursday night with the old rubber bands and then change to new rubber bands Friday morning.