I'm really curious about what someone with aphantasia experiences while tripping on LSD. Visuals are a large part of the experience.
And from there it's possible, with effort, to do it while awake and with eyes open. If you've ever read Roald Dahl's "The Wonderful Story of Henry Sugar", I've found the experience remarkably reminiscent.
I'm not sure if it's the same mechanism as aphants have, as it still feels far more laboured than what they describe and very much still in the realm of closed-eye visuals, but I've found it's better than nothing.