Using low cost, highly visible contact points, called Stickies (https://sticky.to/) and the same technology as contactless payments turn any physical object into a donation point for your charity.
See some example use cases for existing Charity Donation Boxes, Events and Volunteers and start to consider how you can bring a unique experience for your donors and grow your Charity income., https://www.nextgendonate.co.uk/donation-use-cases