Yes, things wich triggers your brain in a WTF manner will create a more consistent "brain trace".
One way to achieve this is to create a weird and bizzarre narrative wich connects the main information around a subject in an original story.
Weird stuffs will create major connections, even more if the infos you're trying to recall are linked to other data patterns you already know very well, because this will make more synapses sprout and fire to connect the datas.
Graphics and spidergrams are also useful, but more as a mean to retain the major points of a subject in my opinion.
If you can visualize or get into trance, you can try and build a memory palace. Visualize and focus upon a very common and familiar place that you can easily remember and know very well in detail such as your bedroom, and visually put the infos in very specific spots (On the desk, under the pillow, in the closet..), in the forms of messages, suggestive items or scenes. The familiar place will enhance the connections and the Brainwaves of trance specially Alpha will improve the process as well.
Recalling the infos periodically keeps the synapses safe, dead paths (unused ones) will likely be cut or redirected due to Neuroplasticity. Doing that before sleep also works, because during nighttime the brain will re-arrange new datas to integrate them.
Linking the info to more sensorial ways is also a good way to improve memory, but this can be time consuming and really depends on your time and skill with it.
By the way I'm sure there are Runes you can use as well
Buono Studio!