Apart from going to a local store nearby and buying something off the shelf, there is nothing faster than gifting an online course.
Many websites sell "knowledge" online, with some having better content than others.
I do not believe the promises of online course authors, not because they are ill-intended, but because they need to maintain a level of hype equal to that of other authors. It's more our fault than theirs. If you expect to become a master after 50 hours (sometimes even less) of watching a video, you will have an unpleasant surprise. I will not get into becoming a master and what that entails, but I will defend online courses.
It would be hypocritical for me to bash online learning because, in its essence, it is a great thing. The problem is with people's expectations, which expect to get employed after watching some videos. The same people would give up afterward and never use what they just learned again. They should use this newly-gained knowledge and build on it until they get to their goal.
That was a rollercoaster. I went through all those points because I want you to feel good about gifting a course.
It's difficult to recommend a specific course because it depends on the gift receiver's interests.
I would recommend searching for a course on udemy. There are lots of options on more topics than you can imagine.
Bonus tip: Do not forget about yourself. While browsing for courses on udemy, buy something for yourself as well. Nothing beats learning. But don't think about a course as the whole deal of learning a topic but the first step you need to take to learn something new or reinforce existing knowledge.
Happy learning!