Here are grants for which your library can apply; they're arranged by the soonest application deadlines first:

► NASA@ My Library STEM Initiative

75 public libraries will be selected to become NASA@ My Library Partners and participate in the 18-month project, with the opportunity to extend for an additional two-year period.
"Public libraries serving rural and geographically isolated communities, as well as those conducting outreach to other groups underrepresented in STEM fields, are especially encouraged to apply."
Award: two NASA STEM Facilitation Kits (total value: $750); a tablet computer; a $500 programming stipend; a $800 stipend for travel costs for the orientation workshop
Deadline for applying: March 22, 2017
Overview, Guidelines, and Application form

► Ezra Jack Keats Foundation Mini-Grant

Grants are awarded to libraries and public schools to implement a proposed program that bridges disciplines and grade levels from preschool to 12th.
Award amount: up to $500
Deadline for applying: 10:59pm CST on March 31, 2017
Guidelines and Application form

► Literacy Grants for Libraries

Better World Books is looking for libraries with “game changing” ideas which help advance a compelling literacy project.
Award amount: up to $15,000
Deadline for applying: 3pm CST on March 31, 2017
Grant details
Application form

► Activating Community Opportunities Using Libraries/Museums as Assets

“This special initiative responds to the readiness of many libraries, archives, and museums to develop models for co-creating, deepening, and sustaining broad-based efforts to engage and serve a local community."
Award amounts: $25,000 to $150,000
Deadline for applying: April 3, 2017
Details and recorded webinars

► EBSCO Solar

EBSCO will fund two $100,000 grants to libraries looking to transition to solar power.
Award amounts: two $100,000 grants
Deadline for applying: April 28, 2017
Details and Application form

► Rural Public Library Grant: Children’s Book Project Program

To qualify for the grant, libraries must be located in a rural area, have a limited operating budget, have an active children’s department, and raise $200-$400 through a local sponsor. Libraries with total operating budgets of less than $50,000 will receive funding priority. A rural community is typically more than 25 miles from an urban area (population over 50,000) and not a part of a metropolitan area.
A librarian from the library awarded a grant through the Children’s Book Project Program will receive a booklist from which to select books for the library. The booklist is divided into two groups based on recommended age and grade levels. Books in Group 1 are for emergent and beginning readers (birth to age 7; preschool to grade 2). Books in Group 2 are for middle and intermediate readers (ages 7 to 12; grades 2 to 6).
Award amount: up to $1200 worth (at retail value) of new, quality, hardcover children’s books
Deadline for applying, May 1, 2017
Application form: choose the fillable Adobe Acrobat PDF or the Microsoft Word document.
Details

► Baker & Taylor Awards for Friends Groups and Library Foundations

The Baker & Taylor Awards recognize Friends groups and library Foundations for outstanding efforts to support their library.
Award amount: $1000
Deadline for applying: May 1, 2017.
Details and Application form