I should think something along those lines would do quite well for your needs as a temporary measure, although I might consider leaving the case out of it for the sake of its leather, if doing so poses no particular problems. If you’re going to take it all out of the humidifying setup every day, maybe no problem for that, but I’m not comfortable presuming that the case should be okay; once we start talking leather, I’m out of my depth and inclined to advise caution. A person more experienced with leather really should advise you on this part of your question. Ultimately the main thing is the flute, of course.
I like the Humistats, too, and have been using them for about 5 years. Mine get that black gunk in the sponges (I assume it’s mold or mildew?) every now and again but a good overnight soak with white vinegar seems to fix them right back up.
I just did some checking, and the Humistat #1 model looks promising. It’s definitely cheaper than my present method, especially if it does the job for so long. Where do you put the Humistat? Considering that my flute has a fitted case, a Humistat may not work for me; I’m balky at the idea of changing cases just for that.
I have a couple of No 1s, both of which fit into the little cork-grease tube cutouts in a Northwind and a Mooncoin flute case – they’re just a bit bigger than a tube of Burt’s Bees lip balm, so if you have “cuttable” or pick-n-pack foam you shouldn’t have any trouble at all. Many Cavallero flute rolls also have little chapstick/cork grease tube pockets, and I’ve put No 1s in there too.
I’ve also wedged one between the foam and the wall in a pistol case and that worked. If you’ve got squishy foam you can just mash the thing down in an unused corner of the case.
I bought both the 1 and 3 – I think they had some special $30 “Pak” deal at the time – and the 3 is just stuck to the inside wall of the dreaded Rubbermaid flute tote, along with the cheap little hygrometer they sent along as a bonus. I’m not sure the hygrometer works (or maybe I’m doing a good job keeping humidity pretty constant in there!).
Do you have a cover for your case? I imagine you could always stick a little elastic loop inside and put the Humistat inside the cover at least … it’ll probably dry out faster, so you’ll have to fill it up more, but I imagine it would be better than nothing.
NB: I remember one or two people posting that they’ve had a Humistat leak, but I’ve never had a problem in the several years I’ve had them.
Thanks for reminding me – I lost one at a music weekend this spring so need to replace it.
Just checked my case - I might be able to fit a Humistat #1 in, but the odds are hard to pin down. Mine is a custom job, a so-called “French case” that P. Noy talked me into (when you make the commitment for two fully keyed bodies and foot, at that point you might as well be in for a dime, in for a dollar, right?), so everything’s pretty well snugly fitted with only so much leeway for extras. I used to have a tube of cork grease nestled in there (don’t have a clue where the heck that’s up and gone off to lately), but it was a very close fit. So if the Humistat’s bigger, it might not work. I’ll have to find if anyone local has one and give it a look-see.
BTW: My case already came with a little humidifying thingum - a humidor disc, I guess you’d call it - but it was never enough to do the job on its own in an unhermetically-sealed case in the nosebleed-dry conditions of Minnesota winters indoors. The ferrules kept falling off despite it, and that’s a sure sign that more needed to be done. That’s why I went further and started using the “worms”.
Nano- Oh, I get it. I thought you were humidifying the house. My bad.
Indeed. I consider myself unbelievably lucky to get to learn from her.
Oh, I HATE when ferrules go feral.
During this summer’s drought I began storing my French-cased flute in a 2-gallon Ziploc bag. If it needs extra humidity beyond the Humistat and that, I can always put orange peels in the bag, or even another Ziploc with a dampened paper towel.
One more note … in dry weather I don’t swab the flute out unless it’s well and truly soaked (which, in dry weather, it rarely is) – I just give each section a shake or two, maybe wipe the joints, and pack it away.
Orange-scented flute! There’s a pleasant prospect. 
Orange-scented would be much better than how my flute smells now. I’m still upset over what happened. Long story short I got this beautiful folk flute from Casey that smelled pleasantly of fresh-turned blackwood, and within a week it began to smell oddly like fish. Turns out these omega-3 fish oil supplements I was taking for my cholesterol (a 20-year old with bad cholesterol, grr!) were actually scenting my breath into the flute! I’ve since stopped using them but sometimes I catch a whiff and grimace. My Busman whistle, however, still fulfills my need for those blackwood fumes…
My Martin Doyle flute survived 2 weeks in the Rockies. Temperatures ranged from -2c (Lake Louise campsite, 1600m altitude) to +26c (Jasper). Didnt play it as much as I thought I might. Either too tired after the hiking, or too cold to play. The bits of wet sponge in a bag inside the flute case were still wet when I returned home.
Ian