Actually, this question gets asked a lot...
Some of the new pricy all-china macerating electric "thrones"--Tecma, Raritan Marine Elegance, one or two others have a "grinder" in 'em capable of chewing up the OCCASIONAL tampon, condom, paper towel or wet wipe, but even those toilets can't handle a steady diet of 'em.
But the ONLY thing that can go into a manual toilet or any "basic" electric toilet like the Raritan SeaEra, Jabsco 37xxx series OR a VacuFlush is body waste and quick-dissolve toilet paper. NOTHING else.
And btw, there's no reason to avoid flushing quick-dissolve TP...the stuff practically dissolves in your hand when it even gets damp, so it dissolves very quickly in the tank. Even if an overload creates a clog, that clog is only
temporary...it'll dissolve on its own in a hour or less. Just don't flush ANYthing else you haven't already eaten!