item #1: Audio Technica ATH-M50x headphones

With non-audio issues, see description.

item #10: Apple 5W charger

Original Apple product

item #11: Apple wired headphones w/ mic, remote and small jack

A timeless classic

item #12: D-Link DWA-182 USB 3.0 wireless adapter

Didn't solve my issue but I was too late to return it

item #13: Jump rope with bearings

item #2: 2x energy usage meter with LCD - GlobalTronics GT-PM-05

Simple "dumb" power usage meter with LCD

item #3: Remote control power outlet - Elro Home Control AB440S/3

Similar to KlikAanKlikUit

item #4: 5x smart LED RGB lights - LIFX Original (1st gen)

An older Philips Hue competitor

item #6: Apple Watch imitation charge puck

with Lightning plug