Brain Aid Fest hosts an Athens Litter Challenge. Volunteers will break into teams and help pick up litter. Every first Saturday of the month, 9:30 a.m.–12 p.m. Meet at City Hall. www.brainaidfest.org
Athens Oconee Court Appointed Special Advocates (CASA) will host an orientation Jan. 7 at 10:30 a.m. and 5:30 p.m. CASA training begins Jan. 23 and ends Feb. 27. Meetings are held Thursdays, 10 a.m.–1:30 p.m. and 5:30–9 p.m. arden@athensoconeecasa.org, www.athensoconeecasa.org
The MLK Day of Service Steering Committee is seeking sponsorships and project sites to make it "A Day On and Not a Day Off." Non-profit organizations and government agencies can submit applications to host a volunteer project online by Nov. 28. www.accgov.com/mlkday
Athens-Clarke County Transit is collecting non-perishable food items for the Food Bank of Northeast Georgia. The bus will be parked at various locations around town to accept donations on Dec. 9–13. rachel.hopkins@accgov.com
The library is decorating a tree with donated mittens, hats and scarves for children this holiday season. Bring donations anytime. www.athenslibrary.org/oconee