We used a white pack to fix a broken refrigerator drawer face, and it was a perfect use case

Shows on package a great use: wrap around mac laptop cord so it does not fray

My favorite use so far is to make a 'ledge' on my treadmill to hold a tablet or book while working out.

i would recommend using gloves

Even though 3/4 wasn't used and I folded the packet over and taped it shut, the rest of it became unusable.

Still gave it three stars as I'm aware that's not one of the better uses of Sugru, but was really hoping it could help me out here

My initial use was to repair a couple of iPhone charging cables and it worked great for that.

For cost effective use, it's probably best to save up all those jobs for which it is needed and buy just enough to do them all in one go.