Running nodes for what exactly? What is it you're trying to achieve?
If it's something related to EVM networks, then you're probably better off (depending on what you're tryin to achieve) using an API instead of runnin your own node. Alchemy, Quicknode, Ankr, etc.
Is it a bitcoin node? are you trying to run your own Electrum server? A mempool.space instance? is it just to help the network out? There are plenty of topics about those on the forum.
If I don't misinterpret the title the OP looks like he is Airdrop hunting for writing an incentivized testnet. And the node in question seems to refer to the running node extension.
Unfortunately for the OP right now there is no airdrop that is really worth the time sacrificed. The era of AirDrop sednag in a fairly difficult phase can even be said to have dimmed.
If OP is willing there is a lot of Airdrop related discussion in this thread
https://bitcointalk.org/index.php?topic=5578109.0 maybe you can find something you're looking for.