Newbie Blogger Problems! Help?!

I am trying to come up with catchy titles for each day of the week (Tuesday Troubles, Silent Sunday ect.) I've seen many variations on several different blogs I follow & it seems everything I think of is taken. What's the proper etiquette for this? Can I "borrow" someone else's? Do I ask? Do I do an unofficial link up to them to give them the credit? Is it even a big deal? Do I suck it up & keep trying to come up with my own unique catchy titles? Would love feedback, thanks!