1. A Universal Translator
How easy life would be if you have an easy solution to each planet you discover. Here is one idea with just the pressing of a button, you are allowed access to every aspect of a new language, foregrounding perfect translation, rather than being hapless over the rudimentary knowledge of a foreign language. Rather than sweating it out over every new syllable, wouldn’t it be idyllic to just use it when the time comes, and completely wipe it off from the memory slate, once the deed is done.