Chinese characters picture dictionary / mnemonics?
Chineasy
(Not a complete dictionary, per-se, though)
Dezeen did a pretty interesting review of it here:

Chineasy illustrated characters designed to make learning Chinese easy
This system of illustrated characters and animations was developed to help people learn to read Chinese, and is one of the 76 projects nominated for Designs of the Year 2014 (+ slideshow).

Tree
Taiwan-born entrepreneur ShaoLan first began developing the Chineasy characters as a way to teach her own English-speaking children to read traditional Mandarin Chinese, by creating a visual connection to the words.

Woman
Having struggled to find a straightforward way to negotiate the huge number and complexity of Chinese characters, she teamed up with graphic artist Noma Bar to develop a system of shapes representing some of the most commonly occurring symbols, which can be combined to create more complex phrases.

Fire
&quot;I created a methodology that breaks down thousands of Chinese characters into a few hundred base building blocks,&quot; explained ShaoLan. &quot;When these building blocks are combined, they form compounds that can in turn be combined to create phrases. Through this method learners can quickly build a large vocabulary of characters with very little effort.&quot;

Mouth
As well as providing users with a memorable way to understand the characters, Chineasy aims to offer those living in the West an insight into Chinese culture in a visual format.

Water tap
&quot;It is educational, social, cultural, and I hope, inspirational,&quot; said ShaoLan. &quot;I am demonstrating the beauty of this deep and ancient culture with a modern interpretation through sleek modern design.&quot;

Moon
The entrepreneur spent her evenings selecting and sketching suitable characters to form the building blocks of the Chineasy system, which she then modelled on her computer and refined to create contemporary graphic representations that could easily be understood by Westerners.

Roof
Having presented the initial idea at a conference organised by innovation forum TED that was published online in May 2013, the interest she received encouraged ShaoLan to begin working on a book and launch a Chineasy website and Facebook page.

King
A campaign launched on crowdfunding site Kickstarter exceeded its goal of £75000, eventually achieving £197626 of backing that was used to publish the first Chineasy books.

Mountain
The books are now being published by Thames &amp; Hudson. An ebook has been released and an app is in development to illustrate how to write and correct stroke order through simple animations and give tips on pronunciation.

Door
Chineasy was nominated in the Graphics category of the Design Museum's shortlist for Designs of the Year and features in an exhibition at the museum until 25 August.

There's books/flashcards/notebooks/workbooks and a memory game using this method.
Here's some links/info:
Chineasy: Chineasy site with news/videos/products/faq
TED: ShaoLan:Learn to read Chinese ... with ease!
TED: ShaoLan: The Chinese zodiac, explained
Here's a project description from ShaoLan:

Chineasy
Chineasy's aim is to bridge the gap between the East and the West. I want to give the west a real understanding of China and an appreciation of Chinese culture through their own eyes rather than layers of packaging and manipulation.

The method - compounds
It is evident that people are hungry to learn about China. People are keen to be able to communicate with the 1.3 billion people. Tet there is not much out there to enable them to do so. Whilst the entire Chinese population is learning English, the west is struggling to comprehend this complex economy and society with their own eyes and judgment. Knowing their language is the key towards true understanding.
Chineasy will become the first step for anyone in the world who wants to understand China, Chinese culture and its language. It is educational, social, cultural and inspirational. I am demonstrating the beauty of this deep and broad culture through a modern interpretation using sleek and simple design.

method - the Phrases
Chineasy's goal is to allow people to learn to read Chinese easily by recognizing characters through simple illustrations. The magical power of the Chineasy method is that by learning one small set of building blocks, students can build many new words, characters, and phrases.

You can check out a video they put out on youtube:
ShaoLan's Chineasy: Lesson 1
The book has more explanations like:


Pinyin: 日 ri4
日 The current version of this ancient building block is quite interesting. It looks just like a window, which is quite handy for us learning Chinese, but why doesn’t this character look like a sun? I mean, it’s not especially hard to draw a sun, right? Well, it used to look a lot more like that burning star in the sky, but the Chinese language has been evolving for thousands of years and most characters have changed a lot. It’s just like “old English”, “middle English”, and “modern English”. The oldest form of Chinese that ...