With skillful hands, patience and help, it is possible to make them all in an hour. For the little ones, patience ends faster, so just encourage them and tell them "how good the mucenici will be" etc. :)
Arrange nicely in an oven sheet, lined with baking paper. We had two sheets.
You can let them dry until the next day, but if you or your chef assistants don't have patience, keep them in the preheated oven at 200 degrees C for 5 minutes.