Do you mean a crafting/DIY idea? Here are some ideas on Pinterest: https://www.pinterest.com/tickledpinktony/photos-slides-negatives-upcycle-reuse-recycle-repu/?lp=true
If you have a darkroom you can go ultra high contrast and make some pictures that look the drawings. Or while in the darkroom you could use regular household bleach and a q-tip and bleach out the background.
I LOVE this idea!
You can use them in scrapbooks and for cards.
There were no links to these, just the photos on Pinterest, but they are great ideas: