The Mini Brain Trainer is designed to improve your mental agility and memory power. Pop it in your handbag and give it a blast for a few minutes a day and eventually you will solve the puzzle of inter-stellar flight and invent commercially viable fusion power. No really. £9.99.

This brilliant new Mini Brain Trainer also provides a mental workout at a fantastic price. Few minutes a day working out on the Brain Trainer Mini will keep your brain functioning at peak levels. The mental exercises featured on the Brain Trainer mini, take the form of 4 games each with 5 different levels of complexity and also measures progress over time. * Flash: memorise the 4 numbers that appear on the screen quickly * Sequence: memorise the numbers that move across the screen quickly * Catch: catch the block as it moves from left, right, top or bottom * Blocks: memorise the block shape that appears for an instant.

[Oh, and you may want to check out this alternative product too.]