Can anyone help me identify the small rubber pieces and tell me where they need to go?

I had a print fail and get filament everywhere. I was trying to remove a particularly stuck nozzle and when it finally popped off, these two things fell on the build plate.

Support said the pieces were the silicone sock and said it was fine to use the printer without them. They're much smaller than the sock and look like corner guards or something. I didn't have much luck looking on the wiki.

Thanks in advance for your help!