This is a great 30 minute print for giveaways. It creates a "How did you do that?" moment when someone picks it up.

Printed with PETG @ 250C on a Printrbot Metal Plus. I waited until the 50% point in the print then laid the quarter inside with a pair of long tweezers. There is plenty of room below the print head to lay if flat at that point, so no need to pause the print.