I took my grandson aged eight and my granddaughter aged four to an event at the library. It was organised by the local Recycling Arts Project aka Your Ideas Ware house. The items used to create fruit and vegetables were made from stuff thrown out by local industry. The local branch of the national scrapstore network is available for creative reuse in artistic and practical projects.
The children made a leek and a large purple plum, which they chose to take home to show their mother instead of adding them to a painted rural landscape, with a large tree with branches on which fruit could be hung.
The stock at the centre changes regularly. Items available include:foam,strapping, fabric, tiles, cardboard tubes, wadding, acrylic off-cuts etc., as well as cards, papers, foils and the unexpected.
I think its well worth £15 a year for unlimited help yourself supplies for my grandchildren to use creatively.
The centre also runs themed making sessions using materials from the warehouse.