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.
STL (Stereolithography, filesize: 56.3 MB), OBJ (OBJ, filesize: 20.1 MB), 3MF (3D Manufacturing File, filesize: 25.8 MB)