Cielo Pill Holders - Stainless Steel Tall Slim Dual Chamber Keychain Pill Fob - Made in USA - Lifetime Guarantee - Pill Case (0.5" id; 3.1" h)

I bought one for my hormone pills which I take three times a day, just put it in my keychain and no more worrying if I forgot to bring my pills or not. The only caveat I got is that the o-rings wear out and it gets a bit rough to open/close, but that's just something that happens with those parts.