The last time I published in an Elsevier journal, I was allowed to deposit it in my institutional repository with a 2-year embargo period. Still sucks, but if your repository software supports embargo periods (my university's did), it means you can deposit now and it'll be automatically switched to open public access when the embargo times out, which is at least better than never (and less error-prone than hoping I remember to post it in two years).
I also posted the PDF on my personal website immediately, on the theory that they are probably not going to sue me personally over my own paper. Not impossible, but I haven't gotten a C&D.