I already do the first one by keeping all my writing on Dropbox (syncs everything between my MacBook and iPad, and will sync updates from the Chromebook app, Writebox, when I have Internet access); by using an external hard drive for automatic backups using TimeMachine (Mac); by using Carbonite for offsite backups.
I really need to work on the second item. I have so many copies of my first two Klondike mystery books - thinking about getting a new edit done and only keeping that version.
Number three is a no brainer for me...not a clutter person. LOL!
What are your writing tips to help productivity in 2016?