These little ejector tools are useful for more than just SIM cards. CD/DVD ROM drives have force eject buttons inside tiny little holes that these can reach and push. Many hardware reset buttons are also hidden inside tiny holes.
You could use an unfolded paperclip in a pinch. One of my air purifiers has a reset button inside a hole that is slightly too thin for the paper lips I have on hand. But the SIM ejector tool I keep around fits perfectly.
Flatpaks can also be used to run CLI programs, but it requires using flatpak run <package.name> instead of using the apps standard CLI command. But you can create an alias and should work mostly the same way.
For example, I have neovim on my Debian laptop via flatpak. So in order to run it, you have to do
<span style="color:#323232;">flatpak run io.neovim.nvim
</span>
You can create an alias for that command
<span style="color:#323232;">alias nvim='flatpak run io.neovim.nvim'
</span>