Good quality children's books for orphanage in Nigeria (Isleworth TW7)

My friend is visiting a Nigerian orphanage in February. The orphanage is poor and she will be buying them a large bookcase. We need to fill a large suitcase with lovely books. The children's ages range from 3 years to 13 years. Fiction, activity books, non-fiction, etc. all to stimulate their imagination and to excite and encourage them to read.

Please can you contact me with offers? Second hand is absolutely fine, as long as they are in good condition.

Thank you.