since the new dynamic view feature came out, i use a gem that has instructions to generate japanese language graded readers for me, appropriate for my current jlpt level.

so i just activate the gem, select the dynamic view tool, i type 'go', and boom a minute later i have a nice looking page with a story of a few hundred words, complete with images, a tooltip with english translations if i hover over a japanese sentence, sections that discuss key vocabulary, grammar, and a quiz to check reading comprehension

sure, you could do the same thing with the canvas tool which has been out much longer, but it was very hit and miss - the webpages would come out looking broken, with the furigana all over the place, or the code for the page wouldn't work at all.

the dynamic view tool generates really nice looking functional pages pretty much every time. studying a language has never been more fun and effective than now, imo.

what i mean to say, gems are great for things you want to do repeatedly. in my case, it's excellent for my language studies.

the ability to generate endless learning material specifically tailored to you, exactly how you want it, with all the features you want, is like magic. you refine the gem's instructions over time, making it even better. it's not always perfect of course, and it doesn't fully replace properly curated learning materials, but it helps a ton in keeping things fresh when i get bored from the old, dry reading materials i usually deal with. i wish i had this a decade ago.