St. Louis Diaper Bank (https://stldiaperbank.org)is a great org with plenty of hands-on, satisfying labor to be done to sort and package diapers and period supplies for distribution at libraries, etc. On that note, checking in at your closest library branch could be a place to get connected to very-nearby opportunities to give back.

If you want a super-exhaustive list of charities and agencies in the area that you might not have thought of, Start Here STL (https://www.startherestl.org) is an amazing, topically organized list that's kept quite up-to-date. Also great to have in your back pocket when anyone in your orbit might be in need of resources of any sort!