As a person who is yet to use their PS4 (I have MGSV but I've also finished it on PC, can't currently afford Uncharted Collection) and still has/uses their PS3, would it be a good idea to get PSPlus to stock up on those free games? I found out just today that even if you don't have the PS4 linked to PSPlus yet, or even if you don't own a system, that you can still claim and add the free PSPlus games to your account. The example given (in the video I watched) was with PSVita, just claim the PSVita games and if you ever buy a PSVita, hey presto you have a ton of free games to play. Pretty nifty that. At the very least I'd get more to play on my PS3 that is still going strong. No way am I getting rid of it (PS4 doesn't have PS3 backwards compatibility and I still play those games).
I'll use that Shopto offer posted above if it's worth it. I can do the things via the Playstation Network android app, you can actually do some cool stuff with it (like turn on your console and use it as a keyboard) too.