Mod Lotto (AKA LottoPredict) is a Joomla 2.5 module designed to work with the LottoPredict API for the UK's National Lottery draws.
It supports a variety of settings and functionality, all of which can be viewed on this demo site. Any aspect of the module can be disabled from the configuration, so it's possible to (for example) simply generate a lucky dip for visitors. All forms can also be disabled where necessary.
Either use the menu items on the left, or the links below to view each of the demonstrations.