I must have missed this thread earlier... Chesterfield Township Library has had outdoor pickup lockers for about two years now. Patrons love the convenience. We built off the idea that Otsego Library posted (I don't see them on the list).
We ultimately went with the all-weather, 6-tier option from uline.

On Tue, Jan 17, 2023 at 2:40 PM Dorothy Hull Library via Michlib-l <michlib-l@mcls.org> wrote:
Thank you to all who responded. The overwhelming response is that patrons of libraries who have installed lockers love them. I heard from just one library who felt that use had fallen off and might not keep them, but there were 18 libraries total with them, and 5 who wanted more information because they are considering them. A couple of the larger systems had installed them in a single branch to begin with, but plan to continue to expand their use. Responses were from all sizes of libraries and well distributed around the lower peninsula.

My query was born of looking for alternatives to expanding hours when our past history means that those hours will serve very few patrons. Lockers look like a very cost-effective option. 

Libraries who have lockers, in no particular order, include:

Loutit
Gladwin County
Jordan Valley
Presque Isle
Hudsonville
Petoskey
Harrison District
Pere Marquette District
East Lansing
Jackson - Meijer Branch
Cadillac-Wexford
Saginaw Tribal Libraries
Grand Rapids Public (3 branches)
Howell
Southgate
Brandon Township
Novi
Grand Ledge

Again, thanks to all who responded. 

Ann 

Ann Sanders
Director

Dorothy Hull Library
Windsor Township
405 W Jefferson
Dimondale MI 48821

517-646-0633
dimondalelibrary@gmail.com

windsor-township.ploud.net
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--
Shane Stewart
Circulation Supervisor
Chesterfield Township Library
50560 Patricia Ave.
Chesterfield, MI 48051
Phone: 586-598-4900
Fax: 586-598-7900
E-mail: shanestewart@chelibrary.org