1. Create visual associations: Use images or mental pictures to connect key concepts or terms in commerce with something familiar to you. For example, if you need to remember the difference between supply and demand, you could imagine a faucet pouring water into a bucket (supply) and people with empty buckets waiting to collect the water (demand).

2. Use acronyms or acrostics: Create a memorable acronym or acrostic using the first letter of each word or concept you need to remember. For instance, if you need to remember the different types of economic systems (capitalism, socialism, communism), you could use the acronym CSC, which stands for "Capitalism, Socialism, Communism."

3. Create a story or narrative: Turn the information you need to remember into a story or narrative. Make it interesting and engaging by adding characters, plot, and emotions. This technique helps you connect different pieces of information and recall them in a sequential manner.

4. Utilize rhymes or songs: Transform the information into rhymes or songs. Our brains are wired to remember catchy tunes or rhymes easily. You can create your own jingle or adapt an existing song by replacing the lyrics with commerce-related content.

5. Use the method of loci: This technique involves mentally associating each piece of information with a specific location or place you are familiar with. Imagine yourself walking through that place and visualizing the information at different points. As you mentally revisit the location, you can recall the associated information.

6. Chunking: Break down complex information into smaller, more manageable chunks. Group related concepts together and give each group a meaningful label. This helps you remember larger amounts of information by organizing them into logical categories.

7. Utilize repetition and practice: Regularly review and practice the information you want to remember. Repeating and reinforcing the mnemonics will strengthen the neural connections in your brain, making it easier to recall the information when needed.

Remember, the effectiveness of mnemonics may vary from person to person. It's important to experiment with different techniques and find what works best for you.