My photos take up almost 7GB, but there's over 10 years worth of photos on there. And in the unlikely event I got low on storage, they would automatically get swapped out for lower resolution ones to take up less space. Which is handy I suppose.
I'm currently using 44GB of local storage, half of which is for Retroarch, then photos and videos. I could easily live without the Retroarch stuff which is 20 odd GB and the videos.
If I wanted to free up space, tho I can't imaging why, I could throw that lot onto an external drive that I use with my Kingston G3, or just put it all on an SD card.
The Kingston is surprisingly speedy too, being wireless ac. It can stream 3 10GB high bitrate MKVs simultaneously to separate devices with perfect frame rate. Not bad for a pocket sized WiFi/Ethernet router/USB/SD reader. Handy wee thing.