Alternatively, maybe there are official releases from Toei Animation, the studio that produces Crayon Shin-chan, either on physical media or digital platforms like iTunes or Google Play. These official sources might have the movies dubbed in Spanish. I can suggest looking into those options.

It's also important to note that some fansubs (fan-made subtitles) exist where volunteers translate the original Japanese content into Spanish. However, these are not legally distributed and can be considered pirated, so I should advise the user against that path for ethical and legal reasons.

I should also consider technical aspects. If the user wants portable files, they need to ensure they have the right software to convert the videos if necessary. For example, if they download a movie from a streaming service and want to transfer it onto a device, they might need a video converter or use the platform's built-in offline feature.

The user might not be aware that downloading pirated content can lead to legal consequences or computer viruses. They might also not know about the availability of Shin Chan movies through legal streaming services. So maybe my answer should guide them towards legal methods.

Another possibility is that the user wants to watch these movies on a portable device like a tablet or smartphone. In that case, using the streaming app on that device would be the best approach. They can download the content when connected to Wi-Fi for offline viewing.

I should also mention the importance of supporting content creators. By using legal methods, the user contributes to the sustainability of the show and its creators. Pirated sources might not only be illegal but also support the production of lower-quality content in the long run.