Small basic fun Extension (and other extensions!)

[litdev]

Hi ZS,

I did do a quick look and couldn't see any active links to any dlls or source for most of these, but if you find any I am happy to try to update and host them.

Many of those you mention were quite small and were mainly tests of creating an extension rather than adding significant new functionality or widely used, but there may be some jems waiting to be rediscovered .