I've raised £200 to help fund research into the best forms of chimpanzee enrichment. Help me give the chimps the best summer ever! :D

I am doing research for my Masters in Primate behaviour and conservation to find out what type of enrichment they enjoy the most. Enrichment can have huge positive effects on captive species and I would like to find out which type is the best! I will be doing 5 categories of enrichment:
Nutritional (involving novel tastes and unusual delivery of food)
Psychological (involving manipulable objects)
Visual (involving images, colours, videos and mirrors)
Auditory (involving music)
Olfactory (involving the use of scent mats and cloths)
Many of the enrichment devices will be made from recycled materials but some will have unavoidable costs. I am asking anyone who can to donate whatever they can to help fund this research!
If you cannot donate to the the page for any reason but would still like to help please contact me if you have any materials which might be useful for enrichment devices including but not limited to:
● Plastic bottles
● Cardboard tubes
● Cardboard boxes
● Long sheets of paper towels
● Cloth
● Old clothes and fabrics
● Logs
● Crates
● Paper bags
● Wooden boxes with different shaped holes designed for children
● Bubbles
● Large balls (in different colours)
● Balls with bells inside
● Buckets
● Baskets
● Hammocks
● Ropes
● Tyres
● Hessian sacks
● Stand alone mirrors
● TV screen/computer monitor
● Paper cups
● Groan tubes
● Hanging ladders
● Paddling pool
● Any toy suitable for children aged 2-6
Please note anything donated will likely be destroyed by the curious chimps!