I have mentioned, in another post, Talk Blocks for Work. These are designed to help in promoting self-expression (about feelings and needs) in Autistic people and to lead to easier discussions with colleagues.
Indeed, other tools may become available to aid Autistic people in helping them understand or convey emotions. Below is an abstract (and extract of the full text) from a recent study suggesting that some people (at least one person) on the Autism Spectrum have a form of Synesthesia which allows them to do this…