You’ll need a downspout adapter and end cap, some 4-in. PVC pipe and adapters. Pros: This is especially effective when the extension needs to cross a walkway or is in a “knock-off-prone” area.

Most gutters already have an opening to place a downspout, so you can use a V-shaped hook or a rain chain adapter set inside that opening to attach the rain chain neatly. If you add a rain chain ...