The first was mentioned on the Latinteach list ... it's a facility to allow you to make a Spongebob calendar which has the Roman names for the months and Roman numerals for the day numbers ...

The second is something I found via Lifehacker ... the Official Seal Generator is an online facility to generate (and print ... you can even order fridge magnets) your own 'official seal'. If you've always wanted to put your Latin motto on something official looking, this is a good way (I could see this being used as an activity in a Latin class too, obviously) ...