I was playing Sticker Star on Halloween and did the ungodly snow slide level, if you get 100 coins, you get a 1-UP. The first time I did it, I got the regular one and immediately chucked it. The second time, I got the shiny 1-UP, but to my intense chagrin it had immediately vanished due to not having any room because a sombrero held up a spot.
The first time I seriously attempted to beat Sticker Star, my save file had corrupted by the time I made it to the snow world. Luckily I was running custom firmware, and I had backed up my save file… except the backup was from before I started really playing for real (World 1). After that, I dropped the game and only came back to finally beat it a couple years ago. Was it worth it? Eh. Honestly, I thought the later worlds were more fun than the earlier ones, so that was cool at least.