I would put them on the back of my tv. The ability to change the color behind the tv to music that could be playing on my Sonos speakers would be awesome. Around the ceiling in my kids room so would need between 45 - 60 feet. For in the kids room if I could have them to timers to change colors, so yellow they need to stay in bed, and then change to green when they can get up and come downstairs.
Underneath cabinets in the kitchen for mood lighting or just dim for a night light.
Outdoors I would love to put them under the railing of my deck so I would need at least 60 feet there with the ability to change colors for different holidays. Also outside on our porch railing in the front of the house would be great with color changing for the holidays as well.
Thanks for listening!