If you're talking EDC small and its an emergency not a planned time out, I've tested this setup in various temps. I carry
1 emergency poncho
1 SOL 1p blanket
1 SOL 2p blanket
2 hand warmers
2 foot warmers
4 6ft bankline
1 25ft paracord
4 marbles
1 hat
1 pair of gloves
Many possibilities with that set up, in its simplest form you can toss on the poncho and crack the hand warmer and sit down and get your arms and legs into the poncho and that will keep you non hypothermic if you got wet in the 60s or maybe wrap yourself in the 2p blanket as well. You can then start adding in pieces as need and environment dictated, if its raining and you have no shelter and no way to construct one you could use the 1p blanket and sit on it so you've got a dry place to sit and making sure to keep it inside the poncho so water doesn't pool around where you're sitting. The marbles, you can use one and a line to secure the blanket around you like a wool blanket making a matchcoat or a hooded cape or you can use them for tie outs if you decide to build a shelter as there are no gromets in the emergency blankets, you can also ditch them and find smooth round rocks but that may not be ideal given your situation. If you build a shelter put the poncho on and lay down on and wrap your self in the 2p using the 1p for the tarp and put two hand warmers under the poncho front and back to keep your core warm and the foot warmers for your legs. You will need to manage your ventilation/condensation as you do not want to start sweating and end up wet especially in cold or humid conditions
Just to give you some ideas of combos possible as I've tested those a couple times in varying temps, the shelter one was in the mid 30s on and off rain and I had the hat and gloves on while I was uncomfortable for 5 hours I wasn't hypothermic
If I'm hiking or want to run minimal its my MEST tarp, large MEST poncho, woobie, same cordage as above, 1p blanket, sea to summit nano bugnet and my reflectix sit pad, that keeps me warm into mid 40s as I use the poncho as the tarp as its 5x9 for more coverage, make an insulated bivy out of the tarp and woobie lay my core on my sitpad and the 1p blanket as the ground sheet I use the bugnet even when its cold as it cuts down on air movement to get some more boost and it keeps the ticks off me
I also for compact emergency carry have a piece of heavy duty tinfoil, bailing wire, a vegetable bag and fruit bag from the grocery store and either a leatherman squirt or bk11, the preference is the 11. I can collect water in the fruit bag and use the vegetable one for clean water as its a little more durable. You can shape the tinfoil into a cup or a box around the bailing wire to hold and hang to boil your water over a fire.
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