If you're "up for anything" musically, here are some suggestions.
1. I have several songs I don't do anything with because they require a female voice. One of them is arranged well (i.e. by someone else), but others are badly in need of help and/or a better direction by someone who is good at arrangements. If you're interested in singing, or collaborating on some of those, let me know. I'm not reluctant about sharing credit or ownership.
2. I have several songs I paid someone to write and perform music for. I'm very happy with what he did, but I didn't know enough at the time to demand music without his vocals on it. You live and you learn. So, what that means is I have a bunch of (what I consider high quality) songs, that I can't really use unless someone else can interpret and set uncompromised music to. Not looking for help here that would lead to ownership because I share ownership and don't wish to lose controlling ownership. Credit, and unlimited "right to use/perform/record/etc" those songs is what I have to offer with them.
3. I have numerous songs with arrangements that need a talented arranger's touch to go from being sub-par to competent. Others need to be taken from "pretty bad" to competent by a talented arranger. Huge variety of styles and content in this category. If I know what you want your "voice" as a writer to be, I probably have some things that would fit that "voice."
4. I have other songs that just need the musical arrangement I came up with to be abandoned and to start over - either from the bare lyric, or from the lyric and vocal treatment. Again, I'm never shy about sharing credit or ownership except in cases where it would lead to losing control of a song.
5. Regarding "control of a song". In the (extremely unlikely) event that a song could be sold, it's important that someone (one of the collaborators) has the authority to sell the song without restrictions. Someone has to have the authority to "say yes" to a sale without permission, and thus, someone has to have clear ownership of 51% of said song.
If any of this is interesting to you, let me know.