Slugaconda dimensions: 12.04mm x 34.12mm x 31.49mm or .47inch x 1.34inch x 1.24inch. I'm only giving the dimensions for the pet slug as I didn't imagine anyone trying to print the other parts. That being said, I have included the models for both the base and cap. I have already printed this in a durable SLA resin, it was scaled to fit the standard toy vending machine capsule available online through Amazon. https://www.amazon.com/Acorn-Bulk-Vending-Capsules-Count/dp/B00MEM2W2Q

Its certainly possible to print the capsule cap in a clear resin but, I bought a whole bag of them for 4.99 on Amazon. If you do decide to print the base and cap, I did use some min tolerances to ensure they do fit but some light sanding may be necessary.

If you need any help with scaling or modifications let me know.