>>623339 (OP)
Hairspray is the cheapest option.
However there are various types of paints that I use for luthier work that also are viable.
You could unironically do a paint spray.
However it would have to be extremely thin and from a distance.
Doing this twice on each side would be enough to ensure it is permanently held this way.
However depending on paper the plant oils would be too wet.