The first study about cocaine and cluster is from from '82 by Barré F.: Cocaine as an abortive agent in cluster headache. (actually establishing that it works already in TINY doses of about 25-30mg in 5% solution). Unavailable due politics, but at least the priciple seems to apply to lidocaine to an certain extent. The tricky thing is hitting the
right spot with the solution going down your nose with a cluster attack wreaking havoc upon you... but even with much efforts and multiple applications it just didn't work every time for me (max. 2/3 of the times). You are actually anestezecing the trigemeninus facial nerve with it, that is if you hit and it works. But you should try even though I you won't ever need to again.
Regarding the availability it's illegally marketed with cocaine

, but should be freely available at your pharmacy for different purposes and in different forms and they should also be able to prepare a solution for you. I tried between 4%, 10% and another purer solution used for ears. Xylocain is brand available here, but DON'T get the spray get the solution, as you need to let the drop drip down your nose while lying with your own nose lower than your neck - a bit hard to describe, check out the ck-wissen.de link in my previous posts and the picture with the red spot on it (or PM me if you have questions).
Regarding the other substances: I actually stopped consuming nicotine for other health reasons ... did not much for my cluster imho. On the one side weed I think helps me to sleep after late attacks on and with the lingering pain and swelling after effects at least for me. Rarely (=coincidence ?) I might trigger an attack by smoking weed after not smoking for a longer period of time which didn't happen too often on purpose for the last years though, as the positives seem to outweight the negatives for me - but I was smoking weed in pre-cluster times as well. Opiates are sadly not an option for me and may well even trigger attacks for me as I am really sensible to histamine as a trigger (due to a histamine intolerance comorbidity ?). Shouldn't have gotten prednisolon at all too and it was intense experience for me, but prevented attacks for a few days for me though, but its high dose and thus not a solution for more than 2 weeks anyway.
We have baclofen here and I read about it, but fioricet or a comparable medication is not available here i think, but it will certainly look into this. Hibernation sound not too good, but I can feel that would be a good thing to aim in my experience.
Other than medications the thing that really helped most was a diet change ... and zero alcohol of course. But I'm sure you know your other trigger factors in your episodes by hearth ...
Yeah and i know what you mean cluster is mostly unknown, but everyone believes to know what headaches feels like (I like the burning needle inserted behind your eyes analogy best plus swollen face, eye stuff ofc). And literally cluster changed every aspect of my life as well

- but I'm though still depressed, I am still lucky to be able to live the life I can live and still have. I can really, really relate to your feelings that the cluster might rip the control of your life from you at any time - I was not even able to plan ahead weeks anymore, never knowing when, how much and how hard it will strike yet again... not beeing able to get sleep makes it so much worse as well and the sheer agony when you thought you doing better and it starts again... but lets concentrate on the few positives still we learn every time, we try new options (see this thread !), science advances and who knows the hormonal changes of old age might prove usefull for us cluster suffers
Sucks you can't get access to a proper oxygen rig at your home - but I only had mine for less then a year, so I don't have my rigs (you NEED a second mobile one ...) anymore due to a few reasons, but honestly I felt a little trapped and either had to carry a 5-6 kg bag with flask and mask all the time at all occasions with me or not leave home farther than 15 minutes so actually I'm quite happy with my triptans atm tbh as long as I don't have to take them multiple times a day.
Regarding Redbull yes it works and great that it does, but it seems to best mostly due to taurin and downing so much redbull esp. with late night attacks (and my daily consumption already and the problems sleeping after them for me execpt from exhaustion) wasn't too desireable for me plus pure taurin is legal and available (and damn cheap too compared to redbull ... plus easily transportable). Other random stuff: Cool/Ice packs applied to the side of your face seem to ease the swelling and pain a bit too for me. Yoga, relaxation techs help a bit after attacks to let go...