We write about hundreds of products every week. Here, in our version of the Sunday circular, we’ve plucked some of our recent favorites: expert-recommended essentials, life-changing stuff you didn’t know you needed, newly launched gizmos, and very good deals we uncovered while trawling the vast online-shopping universe — including the waist pack Tina Barney always takes on shoots, the book Julia Haart says reminds her of her own power, and the foot pads one assistant always keep on hand for her heel-loving fitness-influencer boss.