The evidence of student partying in the night before is usually amusing.
Sometimes, there are bicycle trees, nice efforts made to not litter:
And less amusingly, bicycles in the canals.
I've had to rescue two recently...
This one was resting by the handlebars. I pulled it out and leaned it against a pole nearby. Probably, I should have moved it further away to avoid a repeat.
Yesterday morning, evidence of a wild party night included a broken teacup:
And wheels bobbing up and down in the water. (Another reason to get fat tires?)
It's one of the OV-Fiets rental bicycles. I hope the person who borrowed it comes back to look for it. I left it far from the water, leaning against the building, in full view of the street.