Best Buy offers the Sideclick Universal Remote Attachment for Roku, Amazon Fire TV, or Apple TV for $22.49. (Amazon charges the same for Roku and Amazon Fire TV with free shipping via Prime.) Choose in-store pickup to dodge the $5.49 shipping fee. That's about $6 under what eBay sellers are charging, although they were $3 less last month. This clip-on attachment for these remotes allows you to control your TV, receiver, sound bar, Blu-ray player, and chosen streaming media player from the same device.

Note: The pictured Roku remote is not included.