So I'm working on rebuilding my BOB as well as my wifes and then getting a small bag put together for my 3 year old.
With a three year old, bugging out for us is a last ditch option and I have no dreams of living off the wilderness in the mountains. If we bugout, it will be most likely in urban or suburban areas unless we decide to make a run for WY and then I'll be able to grab our totes with provisions.
Currently my BOB is in a 90L external frame pack (yeah, 90 freakin' liters) and it's just way too big. It's a glorified backpacking setup, and a bad one at that. I'm looking to halve or more mine. I'd like to get it in a 45L pack. My largest items are shelter pieces. This includes my tent, tarp and sleeping bag. I'm going to a poncho tarp setup for shelter to reduce bulk and weight. The thing I'm hung up on is a sleeping bag. I've looked at the SOL bivvys and love the concept but I'm not going to put myself or my family in what equates to a location beacon. I looked at quilts but damn, they're expensive. I need some additional ideas for warmth in an urban bugout scenario.
Keep in mind, this needs to be able to provide warmth for an adult and toddler so some size is important while being compact and light. Yeah, sounds impossible.