Design a funky logo for a school playground equipment maker!

Playscene

I'm building a website on behalf of a brand new company in the UK, and need creative geniuses to design an effective logo! The company is enthusiastic, and is looking to expand rapidly. The company has young (20 to 30 year old) employees.

The site will be attracting playground equipment purchasers - schools, councils, builders.
The target audience is not children, although a fun childlike element to the design is not ruled out!

**UPDATE**

Thank you everyone so far! I would be interested to see if you can apply the same designs (if you have already submitted designs) or make new designs using the following backgrounds:

Black: http://imgur.com/wufxi.png
Green: http://imgur.com/nIHzK.png

I have extended the contest by a day to accommodate for this!
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**Original Brief**
The website itself will have a corporate feel to it, whith a base colour of black and green.

The client has hinted at the following for the logo:
- needs to incorporate the name of the company, either by the side of a design or part of it
- would like a nature theme (perhaps a leaf, tree, hills?)
- likes the colour green!
- They have seen the following images which may hint at what they're after with the logo design:
http://www.istockphoto.com/stock-il…e-hill.php
http://www.istockphoto.com/stock-il…ground.php
http://www.istockphoto.com/stock-il…lowers.php
http://www.istockphoto.com/stock-il…ements.php
http://www.istockphoto.com/stock-il…-water.php
http://www.istockphoto.com/stock-il…sphere.php
(would prefer not to use stock images in final design)

End product should be:
- in high resolution png or jpg format for web
- also in .ai format for printing
- use an opensource font (and would like to have the name of the font so I can use it for other elements if I need)