I think all income goes between line 7 and 21, so it needs to go there i think.
You are correct.
I'm thinking that since this won't be on a Schedule C, maybe it does belong on line 21.
Typically a 1099-misc needs a Schedule C and SE so it ends up on line 12 of 1040.
Because this doesn't need a C, maybe it does end up on 21.
The remaining question is will Turbo Tax etc. let you put it there without counting it as earned income and messing up your EIC calculation?