What about a more general message-passing mailbox approach? This works really well in the Erlang/gen_server/gen_fsm world. (and in plenty of other contexts, but Erlang's OTP is still some of the best, simplest incarnation of these things)

I mean, the "one-queue per consumer" they eventually ended up with, is basically an inbox that the sequential process reads from.

“The problem with most programming languages is that they implement concurrency as libraries on top of sequential languages. Erlang is a concurrent language at the core; everything else is just a poor imitation implemented in libraries.” -Joe Armstrong