How to create a Nano Banana AI 3D figurine using Google Gemini for free: A step-by-step guide, detailed prompt

Creating a “Nano Banana” AI 3D figurine using Google Gemini is a fun and free way to turn a 2D image into a highly realistic, collectible-style render. The “Nano Banana” trend is a nickname for a specific feature within the Gemini 2.5 Flash Image model, which is a powerful image-generation tool.

Here’s a step-by-step guide on how to do it, along with the detailed prompt you’ll need.

Step 1: Access Google Gemini

The first thing you need to do is open the Gemini app or go to the Google AI Studio website. This tool is free to use and doesn’t require any special subscriptions.

Step 2: Upload Your Image

Once you’re in the Gemini interface, you’ll need to upload the photo you want to transform. For the best results, choose a clear, well-lit, and high-resolution photo. A front-facing picture with a simple background is ideal, as it helps the AI focus on the subject.

Step 3: Use the Detailed Prompt

This is the most crucial step. The right prompt gives the AI the specific instructions it needs to create the realistic figurine look. You can simply copy and paste the following prompt into the chat box.

The Nano Banana Prompt:

Create a 1/7 scale commercialized figurine of the characters in the picture, in a realistic style, in a real environment. The figurine is placed on a computer desk. The figurine has a round transparent acrylic base, with no text on the base. The content on the computer screen is a 3D modeling process of this figurine. Next to the computer screen is a toy packaging box, designed in a style reminiscent of high-quality collectible figures, printed with original artwork. The packaging features two-dimensional flat illustrations.

What the Prompt Does:

• “1/7 scale commercialized figurine”: This tells the AI to create a collectible figure that looks like it’s ready to be sold in a store.
• “realistic style, in a real environment”: These details instruct the AI to make the image look as if it were a real photograph, not a cartoon or drawing.
• “placed on a computer desk… with a round transparent acrylic base”: This sets the scene and adds a sense of a physical object sitting in a real space.
• “content on the computer screen is a 3D modeling process of this figurine”: This is a clever touch that adds to the illusion, making it look like the figurine is a recent creation from a 3D modeling program like ZBrush.
• “toy packaging box… printed with original artwork”: This adds another layer of realism, making it appear like a high-end product complete with its own packaging.

Step 4: Generate and Refine

After pasting the prompt, click the generate button. The AI will process your request and create the image within a few seconds. If the result isn’t exactly what you wanted, you can try tweaking the prompt. For example, you can change the setting from a “computer desk” to a “bookshelf” or “garden.” You can also adjust the scale or lighting to get a different feel.

Step 5: Download and Share

Once you’re happy with the result, you can download the image directly to your device and share it on social media. This is a quick and easy way to create unique, personalized content that’s perfect for trends on platforms like Instagram and X.