I love Jack Black products and use way to many of them! I saw someone else mention travel sizes and you responded that there is a 3oz tube.
I travel almost every week for 1 to 2 nights and I am carry on only. This means that I am limited to one ziploc bag so fitting all the JB products I use, plus the rest, even in a 3oz size is simply not possible.
I also try to reduce my plastic usage wherever possible, so while I kind of live off the samples (and often time orders to so I can get larger samples of things I use anyway, I hate doing that.
Ideally you would have smaller, refillable containers that could be used for a variety of different products. I would actually pay good money for that. I've tried using old contact lens cases but that's not ideal because I think too much air gets in and the product degrades.