Loose sheets into folders

I'm keen on the idea of writing 10,000 sentences per language. I want to start now, but how? I don't fancy buying and carrying around an exercise book for every language, as there's a luggage limit that I need to stay under when I fly.

So I'll do it this way. I use the one exercise book and have a page for each language. I'll number the sentence, and write down the date. Then I'll take the book apart (when it's full) and place the sheets into folders.

It's sentences that I'll copy. Maybe some phrases, or even single words if necessary. It'll all be i+1. I will need to know them roughly, not completely. Partially on the way to knowing. I'll be on the lookout for short sentences, that I'll highlight as I read.