I have had a pill fob on my key chain for 20+ years. I recommend it highly. It’s “key” to have pills with you on the go incase plans change, forgetfulness happens, etc. I recommend this one from the Herrington catalogue:
They seal great and last forever. Get the larger one if you have any larger pills like Metadate or Concerta. The skinny one is great for regular acting tabs. I sometimes put a crumpled up tissue in the top to make sure the pills don’t go flying around and get ground into powder.