A regular printer, a binder, and a three-hole punch work fine. As a bonus, the printer is also useful in other ways, and any mementos produced with it will last in a way thermal paper never really does.
I don’t want mementos, I want disposable references.
It’s also not that big of a deal if this isn’t feasible, because the binder works fine, the phone works fine. This is just sparked a “hey, what if…” idea is all.