Bong accessories are additional components or attachments that enhance the functionality, convenience, or aesthetics of the bong. Here are some common bong accessories:

1. Ash Catcher: An ash catcher is a secondary chamber that attaches to the bong to catch ash and debris from the smoke before it enters the main chamber. This helps keep the bong cleaner and prolongs the time between cleanings.

2. Percolator (Percolator Downstem): A percolator is a type of additional water chamber or diffusion system designed to further filter and cool the smoke as it passes through the bong. Percolators come in various styles, such as tree, honeycomb, or turbine percs, and they provide smoother hits by breaking up the smoke into smaller bubbles.

3. Splash Guard: A splash guard is a small barrier or dome located near the mouthpiece of the bong. It helps prevent water from splashing up into the user's mouth while inhaling, especially when taking big hits.

4. Ice Catcher (Ice Pinch): An ice catcher is a series of indents or notches in the bong's neck that hold ice cubes. Adding ice to the bong cools down the smoke even further, resulting in a smoother and more enjoyable smoking experience.

5. Diffuser Beads: Diffuser beads are small glass or ceramic beads that are placed in the water chamber of the bong. They help break up the smoke into smaller bubbles, increasing the surface area for filtration and cooling.

6. Carbon Filters: Carbon filters, also known as activated charcoal filters, can be inserted into the downstem or bowl of the bong to further purify the smoke by absorbing harmful chemicals and impurities.

7. Bong Cleaning Tools: Various cleaning tools are available to help maintain the cleanliness of the bong, such as brushes, pipe cleaners, and cleaning solutions specifically designed for glassware.

8. Replacement Parts: It's common for certain parts of a bong, such as bowls, downstems, or grommets, to wear out or break over time. Replacement parts ensure that the bong remains functional and can be easily swapped out when needed.

9. Customization Accessories: Bong accessories also include decorative elements like decals, stickers, or LED lights that allow users to personalize their bongs and express their style.

These accessories can enhance the functionality, performance, and aesthetic appeal of the bong, providing users with a more customized and enjoyable smoking experience.