If you have, or would like to have, a copy of Pearce, Stevens, & Barr: The Law of Trusts and Equitable Obligations, and occasionally your students might be waiting for a mat, or just plain waiting and wondering what to do, here is a suggestion. Thay can load a glossary of Equity and Trusts terms onto their phones and have happy minutes learning them.
Give them this link for this free resource: http://www.oup.com/uk/orc/bin/9780199570638/01student/glossary/