I am a great fan of LinqQ and Steve Kaufmann and his reading a listening approach. Following one of his tips “Do what you like to do” I found out that I also really like the Gabbriel Wyner method of using Anki with pictures only to remember vocabulary (no native language) (625 Words).
When it came to learning gender Gabbriel suggested using mnemonic imagery, such as exploding for masculine and burning for feminine. I personally tried blue for masculine, red for feminine and green for neuter. The trouble is attaching the mnemonic seemed quite a lot of work and much too repetitive.
However I believe I have found a better way. This is just to simply incorporate the mnemonics into the word picture as you are learning it.
Example. You can get a picture of a dog on a vivid blue background or a blue dog or a blue ClipArt dog or a dog with a blue strip, just keep red and green out of it., and on the other side have Der Hund. For das Kleid you would have a green dress and for Tache a red bag.
The other thing to do is only have a black and white picture (or drawing) for verbs and adjectives
The beauty of this is that the picture in your mind after a little practise instantly gives the meaning of the word with gender or the meaning of the word and the fact that the word has no gender Black and white so adjective or verb.
PS. When listening to a lesson on LingQ it would be nice if there was a function that would toggled off the sound when you looked up a word and toggle if back on when you had finished looking up the word.