One trick Buddhist monks apparently have for helping them learn breath meditation is to put some menthol under their nostrils (-:

I accidently did this today when doing an olbas oil inhalation to help with my sinuses. I accidently got some under my nostrils, and can confirm it does make breath meditation more interesting, and also seemed to help a little bit with the brain fog.

I am not sure olbas oil is the best thing to put under the nose though, must research some skin-friendly alternatives (-:

There's a phenomenon where you might hear something on the radio or video, in a song, a podcast, in an article, perhaps in a conversation with someone. Where something that is said, a phrase, a word really sticks out for you, and seems to speak directly to you, as it resonates with what you are going through at that time, and it feels like it is a message for you specifically from the universe. And it is! Your mind is homing in on that because it is something you need to hear. It is one of the ways the deeper mind tries to help us, tries to communicate with us, by bringing something important to our attention that we are ignorant of, we are often so caught up in our heads we are not listening to the deeper mind. So it will sometimes do something like that, to stop us in our tracks, and bring us a eureka moment, an insight.

When I was practising meditating on the colour red, afterwards wherever I went I would notice the colour red pop out everywhere. It felt magical like I had a special connection with the colour red and it was protecting me. And it was protecting me, that was my subjective experience, as its presence helped me feel calmer, more alive and at ease wherever I went, so it was helping me. This also happened when practising the air kasina, I would notice even the slightest whisper of air in a room, and it would make my scalp and spine light up and tingle with excitement, filling me with a feeling of light. This was all my subjective experience, but it was helpful, it helped me feel better emotionally, and inside it felt more real than what was going on objectively. This is how the mind works, this is what magic is.