Samorga!
I have three of them, the one I use in my NF MM is actually the one for the Iena MM; I ordered for an Iena MM but it works in my NF MM, LePliage, etc too.
My Speedy 30 Samorgas work in NF too, so if you wanted something you could easily switch between a Speedy and a NF, consider that one.
I just have the "regular" 2mm felt ones, and I find they are perfect for me for NF, Speedy, other bags. Add some shape, but still have the squish I like. Unless my NF is packed full, I can still also fold in the sides with it in. I have tried other organizers like PurseBling/Purse To Go, but they can't even compare to the Samorgas, in my opinion. The felt on the Samorgas is also really nice, smooth and sturdy. I hate "fuzzy" felt, if that makes any sense at all.
I know a lot complain about shipping times, but I had mine (to Canada) about two weeks from my order date; I just ordered all three of mine at the beginning of this month. I would definitely get more Samorgas in future if I needed more organizers.
P.S. Coupon code for 20% off "JERUSHA" or "MINKS4ALL".
Here is my Iena MM one in my NF MM:
