For the glaze, mix the oyster sauce, rice vinegar, and sriracha. Taste, and add more sriracha if you'd like, then set aside until you're ready to grill.
For the garlic soy sauce, combine all the ingredients in a small cold skillet. Stir to combine, then turn the heat to medium-high. When the mixture boils, turn the heat off and let cool.
For the peanut sauce, combine all ingredients and taste: add more sriracha to your preference.
When the 3 sauces are done, preheat a grill and grill the veggies and protein until cooked. Brush with the oyster sauce glaze halfway through.
Serve with the sauces for dipping and drizzling. Enjoy!