A simple possibility is to create a context for each word.
As well as the definition, think of what situations the word could be used in, and what other words it groups with. If you have 50 words, they will certainly fall into several categories and naturally group together. Say the words, in a sentence if you have one, and act it out if you're feeling bold.
Also, think of the impressions the word gives you. Does it sound like something in Chinese? Do you think of something odd and unrelated to the definition? Do you like the letter it begins/ends with? What do you feel when you see or say the word? OK, these questions are not logical but may help you remember the word nonetheless.
This may seem like a lot of extra information to learn, but information is remembered more easily when it is grouped and linked with other information.
Don't forget to have fun!