Bridge.
tIGNITION between Robinhood Chain and the Ignition Hook Layer Testnet (tIGNITION is the Hook Layer's gas token), through the chain's own contracts: no third party holds your funds.
From Robinhood Chain
Testnet: tIGNITION starts on the Hook Layer (get it free on the testnet page). To try the bridge, send some "Back to Robinhood Chain" first, then deposit it again. Claiming a withdrawal is a transaction on Robinhood Chain, so it needs a little ETH there for gas.
Arrives on the Hook Layer in a few minutes.