Posca markers are versatile and can be used on a variety of surfaces such as wood, glass, fabric, leather, ceramic, paper, plastic, metals, rocks, and more. Here are some ideas on what to draw with Posca markers:

1. Canvas art: The dense, opaque ink in Posca markers creates stunning results on canvas.
2. DIY phone case: Customize your phone case with Posca markers.
3. Personalized mugs: Draw on mugs with Posca markers to create personalized gifts.
4. Rocks: Paint rocks with Posca markers to create unique and colorful garden decorations.
5. Glassware: Draw on glassware with Posca markers to create custom designs.
6. T-shirts: Use Posca markers to create custom designs on T-shirts.
7. Sketchbook art: Use Posca markers to create colorful and vibrant illustrations in your sketchbook.
8. Posters: Create posters with Posca markers for a bold and eye-catching effect.
9. Greeting cards: Use Posca markers to create unique and personalized greeting cards.
10. Labelling your belongings: Use Posca markers to label your belongings.
11. Creating signs: Posca markers work on a range of surfaces, making them particularly useful for signwriting.
12. Glow effect: Create a glow effect with Posca markers by drawing with a white marker on a dark surface.
13. Smooth backgrounds: Posca markers allow you to apply layers of color on top of each other, making them great for creating smooth backgrounds.
14. Add depth: Use darker colors to create shadow and the white marker to add highlights to add depth to your Posca illustrations.
15. Outlines: Draw outlines around different elements with fineliners to help them stand out.

To use Posca markers, start by shaking the marker up and down with the cap still on. You should be able to hear a ball moving around inside the marker, which means that the paint inside is being mixed. Then, remove the cap and press the tip down on a piece of scrap paper until the paint starts to flow. Once the paint is flowing, you can start drawing.