Radiant Rembrandts, vibrant portraiture of everyday life and uncanny photographs in New York and Boston, to catch before they’re gone, come August and September.

Will Cotter, owner of the Oklahoma-based cleaning company Happy Cleans, recommends grabbing a metal pet bristle brush or a comb with smaller prongs.

This hack converts a simple kitchen can opener into a high-powered electric device. Remove the handle from a manual can opener (they usually pop off with a twist, or by removing the cotter pin) to ...