@ABALLIETT
You tagged on to an existing thread that was (apparently) not applicable to your actual situation. Now you're all confused.
You latest post seems to say you're just selling your personal stuff. You should do two (maybe 3) different things.
1. The stuff you sell at a loss should not be reported at all. See https://ttlc.intuit.com/community/taxes/discussion/i-sold-some-personal-items-on-ebay-and-received-a...
2. For the stuff sold at a profit, you should report it as hobby income (report only the profit not what the item sold for).
3. If some of the items can be classified as collectibles and your are in a high tax bracket, you can enter them as collectible capital gains. If you are in a lower tax bracket, keep it simple, report the collectibles sold as hobby income too.
