Public library fundraising projects should probably be attacked from several different angles. You need to maximize your profits as much as you can, so just running a single effort probably won't be enough to cover everything that needs to be bought.
One way to knock out several possibilities at the same time is to host a public library fundraising event. This is not only a great way to bring in money from donations, food sales, and other activities, it's also a good idea to entice people in the community into coming in and seeing what the library is all about.
Library fundraiser efforts can also involve sending out letters to individuals and businesses in the community who may be in a position to help out. Businesses in particular are usually keen to make tax-deductible donations, and if you write your letter in the most effective way possible, you'll probably be surprised at how well it works.
Public library fundraising can be a little bit of a tricky sell sometimes, but if you explain yourself succinctly and point out all the positive aspects of the project, you can make quite a lot of money that way. Fundraising is a lot of work, no doubt about that, but it is also very rewarding to organize. It's a chance for the library to make important contacts in the community, and to connect with people in a way that might not otherwise happen. These contacts can help the library in more ways than one - not just with money, but also by building a network of users that will benefit from the library both now and in the future.