If you have a machine you can spare, please run a full node. The more nodes there are, the stronger the network is. Also, if you run a full node you can potentially mine your node for information of various kinds. You can tell if you have a full node by giving the following command:
bitcoin-cli getinfo
If the "connections" field is greater than 8, then you are running a full node, congratulations!
You can find information on how to run a full node on bitcoin.org here:
https://bitcoin.org/en/full-nodeTo run full node, atleast need minimum storage around 200GB with unlimited bandwidth. These node wont make network stronger, thats miner will make network stronger. Full node really help to secure network if network use POS as main consensus