1/8-inch ribbon x 5-meter reel (16 ft. -- 4.85 inches) with 6 inch 32 Awg Kynar wire leads attached. Pure White LEDs spaced at approximately 1/2" apart. 26 LEDs per foot of 1/8" wide ribbon. Ribbon is self-adhesive and can be cut at every two LEDs. Another set of leads can be wired to copper sections to enable use of cut-off section. That is about 390 LEDs per reel.
Check out the video on using these 1/8" ribbons for indirect lighting in your dollhouse: https://youtu.be/hH99SIP73eA