This delightful Finnish (I think) site has a few fabulously simple but addictive single switch games (in the 'games of precision' section) and many other simple language games/activities, virtually all are switch or mouse operated. The same site also has
Free programs/resources to download Free upgrades and utilities
Interactive Visual Timetable - free online software
Let's Talk: On The Farm - free resources
Music Games - Key Stage 1 music activities
Talking Faces - free, switch accessible software
SENS
"When making your own PowerPoint book, a template can be a helpful time saver. The templates below are for creating ABC books and personal books for students with significant disabilities, including deaf-blindness. The templates have high contrast backgrounds and some have finger spellings. (The finger spelling photos come from Pics4Learning.com. They are free!). The templates have also been setup so that there is an auditory click and some movement when students turn the pages in the book. In all of the downloadable templates, the pages and the text boxes have already been made. Teachers, therapists and/or parents can spend time adding pictures and text, rather then the technical aspects of starting from scratch."
Accessible YouTube
Developed in conjunction with Henshaws College and JISC, the page features large easy to read fonts, a touch-friendly interface, safe searching using black and white-lists and most importantly your students can control the videos using switches
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A website dedicated to providing high quality teaching activities and games for children with a special educational needs. Our activities are designed to be accessible to everyone including those who access the computer with assistive technology such as switches, touch-screens, mouse and alternative pointing devices including eye gaze."