I once read somewhere that it would be a good idea to have software that periodically generates, adds, uses, then discards various types of SSH keys.
This is an implementation of that software.
$ bash main.sh >/dev/null 2>&1 &
It will generate a new SSH key once a second, DSA 1024, ECDSA 384, ED25519, RSA 1024 and RSA 2048.