I don’t think most would consider it a tool, but cleansing oils in general made removing makeup so much easier (and efficient) that I feel I have no excuse to not remove makeup at the end of the day–when I was younger, it made a really compelling case to always remove my makeup. Now, I’m used to removing, so it seems wrong not to these days! A more tool-like item would be the T3 blow dryer, because it dries my hair so, so much faster than any blow dryer I had used previously and didn’t suck up my hair either.
I like contouring, but I personally like mine subtle, so even though the trend might be to highlight and contour on a daily basis and might seem more extreme, I stay with subtle but might contour more often (because it’s more on my mind than normal)! I’d say in general if it’s a trend that I like or works for my tastes, I’ll use it and apply to the extent that I like but won’t wear it exactly as is trendy if I don’t like it.