Most of Ukraine doesn't need to do it. The internet infrastructure is largely intact and very decentralised. The biggest challenge is the lengthy power outages, but mobile networks keeps running thanks to generators.

Ukraine is being assisted by NATO and commercial corporations based in US and Europe, that would not be a DIY start-from-nearly-nothing example which would be relevant to popular protest movements.

There are a few videos of various Ukraine Telecoms talking about how they're keeping themselves connected.