I rarely carry more than one tube. Even when I was doing 200ks in the boonies I would only carry one. I'm particular about riding good tires and not riding them after they are worn down. I've had my share of flats, but haven't needed two tubes on one ride yet. I did bring two tubes and a spare tire on a three day tour.

Not really, again, perhaps they're great for 23c up to 100psi, but it was a major drag to try to get a 32c up to 80psi. There's just no leverage to really push air in when there's enough pressure in the tube.
I went for the Axiom Enforceair, which I could use it like a floor pump and get a 32c up to 80psi without wanting to kill myself. I suppose the Topeak Road Morph G would perform similarly.

I'll keep the Lezyne around, and maybe when I get a chance to use a much skinner tire, to see how well that works out.

Road - Multi-tool (simple), 1 tube, preglued patches (in case of a second flat), 2 16g cartridges with microflate, 2 tire levers and some money (bills) in case the tire is gashed, cell phone.

Mountain - Multi-tool (with chain tool), 1 Big Air with microflate, 2 tire levers, power link, some money (bills) in case the tire is gashed, cell phone. Carry a tube in case I can't get the tubeless to hold air. Note: The Big Air has nursed me 4 miles after snake-biting my Stans filled tubeless on a big hit.

I had two flats on one ride on time. I had only one spare tube and luckily I was riding with a friend. However, if either us had gotten another flat we would have been screwed. I'm not sure if I can fit a second tube in my wedge pack, but a preglued patch kit might be a good idea just to get to the closest shop or home...

Can a microflate control the flow, or is it one shot and the tire is full?

That's what jersey pockets are for. I carry 3 tubes on 75+ mile rides.

Need someplace to stash an extra tube? There's always this:

https://www.tallacdesign.com/

I've patched hundreds of flats with the old glue and wait patch kits. It's just not that hard to do. One inflator + one mini pump + one Patch kit and you have convenience and peace of mind.

Well I see that Im carrying what is essential,many of you have some good advise which I have followed,the only additional item I carry is a pair of disposable latex gloves,keep my hands and riding gloves somewhat clean,Thank You

A lot depends on where you live. In Virginia, I get a flat every year or two. In Denmark, where they have a particularly pervasive flint, every month or so. Two flats in a single ride wasn't unheard of.

Then there are the thorns in the southwest (forget what they're called, but there's a season for them).

Always: 2 tubes, 2 levers, one multi-tool, all in my saddle bag. Mini pump on the down tube.

Same, but I also have a thing of glueless patches, a half dozen bandaids, non-latex gloves, and chapstick.

Why two tubes? I have never failed to patch a tube when I chose to. I keep a single tube only for convenience and in the off chance of some catastrophic blow out that I've never had. I can't conceive of the need for two tubes. Have you ever needed two? Couldn't patch and needed two? Very curious...

Yes. The Microflate takes threaded cartridges. Flow is controlled by screwing it off and on......from full on.

I'm at a loss why many carry two tubes. I get a flat maybe once every 1-2 years. The probability of two flats on the same ride is almost zero, and I carry an adhesive patch for that highly unlikely scenario. The only way I would take two tubes is if I had a multi-day, touring trip without access to supplies or LBS.

If you get an adjustable air chuck ($25ish) you can control the flow once you screw on the cartridge by pushing harder. It won't send any CO2 at all if you don't push down, so you can def partially inflate a tube to check for mounting, etc.

It's happened to me. I did a 50km loop two times & flatted at the same area both times. I also carry a patch kit in case I need it. Consider this, you head out for a 60 mile ride and when you're 5 miles from home you flat and use up your only spare tube. You ask what are the odds of flatting twice, I'd ask what are the odds of flatting once in the remaining 55 miles. The odds may be low but it's hard to ride away from home with no spare tube. Plus it's incredibly easy to carry two tubes at all times.

Yes, but that's when I pull out the back-up patch, admittedly more time consuming and tedious. Of course, this has never even happened in 40K+ miles of riding, so that's a tradeoff I'm willing to accept. The only situation I'm not covered is triple failure. In that situation, I would be suspecting something else (on the bike) was causing repeated flats. And, in this one-in-a-million situation (at least for me), there are more than enough passing cyclists (even in the more remote areas I ride) that would be willing to spare a patch. It's not like most of us ride in the wilderness, 200 miles from civilization. I've also walked several miles in my bare feet, so there's usually a fall back - not pleasant, but you gotta do what you gotta do. Oh, and of course the cell phone is always there, but I've only used that once.