This paper suggests powerful tools supporting vocabulary retention and learning, providing a strategic way to create a fun activity (online or in-person) that goes beyond the traditional flashcard system. As Wilkins (1970) mentions that nothing can be conveyed without vocabulary, vocabulary is a crucial element for second language learning. The goal of this paper is to demonstrate how long-term retention of new vocabulary can be improved by utilizing (1) spaced repetition strategies and (2) the combination of cues (or texts) and images. The first important tool is spaced repetition that boosts vocabulary learning. Spaced repetition is a memory technique that involves recalling information at spacing intervals until the information is learned at a sufficient level. Once students learn new vocabulary items, it is crucial to skip a few days, rather than practicing them every day, and redirect students’ focus to the words that they have not learned yet. After a few days, a “forced recall exercise” helps strengthen students’ ability to remember vocabulary in the long term. The second important tool is an association technique using memory principles as image associations and storytelling (cf. Klemm 2017), where students can associate what they have already known with new vocabulary. In so doing, cues and realistic images together are used, which works best when associations are explicit. In summary, effectively and strategically using spaced repetition and associational techniques in a foreign language classroom contributes to improving long-term memory recall and supporting efficient vocabulary retention.