I don't know, I think these freebies aren't really worth the effort, unless you happen to find something really good, which doesn't happen too often.

Time spent on this kind of stuff could be put to so much better use, perhaps learn a valuable skill which you could then offer in return for Bitcoin.

If I had to choose between spending a week looking for giveaways or other free crypto-related stuff or spend that time learning how to build a website or programming, I'd choose the latter. It's a far better investment of my time.