Would it be a publicly available page, or accessible only for you?

If it’s a public page, you could possibly host shareware games or with other licenses with a similar effect.

And there’s plenty of games you can legally buy as ROMs (e.g. homebrews on Itchio), games that include ROMs in their files (e.g. River City Girls 0 on Steam, most Neo Geo releases on PC platforms and pretty much any MS-DOS game rerelease), and if you’re from a region with laws not as draconian as the DMCA, there are games with ROMs embedded in their files and that can be extracted. So if it’s a private page, you could go for those too.