How do you donate on Roblox?

The only effective way to donate to someone on Roblox is to buy a "donation shirt" from them. Since only Builders Club members can sell shirts, only Builders Club members can receive donations this method works with both tickets and robux

but if your really desperate for money and your builders club and no one is buying your shirts create a second account and use that to buy your shirt but if you are builders club you do earn robux each day so donation is not needed and if you have tickets and want robux you can trade currency