Edit: I just saw the other post. Only assets that are available to everyone, and we can't reuse our own old assets unless it has been posted on the internet
I think you're good to create assets /during/ the jam though, so that might make it easier for you: (From the Rules:) "- Game assets, unless freely available to anybody, must be created during the jam."
I think that sort of goes without saying. The only times where you can't create your own sprites are other game jams where they force you to use their sprites.
