Add transactions through radio or a independent wireless mesh network that doesnt need an internet provider. I think those kinds of transactions would be the most important because they cant be censored by anyone in power.
In the end there is a party that broadcasts the transaction to the network through the internet, so it's not entirely bullet proof. I have yet to come across something that's truly censorship resistant. That however doesn't mean these semi offline networks aren't useful. I have seen a demonstration where its usefulness peaks in areas hit by natural disasters and whatnot.
What I am looking forward to is the day that a wide range of compatible hardware wallets will allow you to swap preloaded private keys in a direct peer to peer manner. Benefit here is that no one externally will notice that coins have been put to work because nothing happens on-chain, while in reality the coins may have had hundreds of different holders already. I don't think we're that far away from seeing this become reality.