I agree with Zlantann that banning Russia from SWIFT isn't very useful, and may in fact be counterproductive long-term. Banning them from SWIFT is like this: Imagine that most of Russia's exports were sent to the outside world via UPS, and you ban Russia from using UPS. It's very disruptive short-term (for both sides of the trade), but they're just going to switch to Fedex or whatever. Banning Russia from SWIFT is like that: it's short-term very disruptive, but it's not that hard for Russia to find an alternative, and long-term the ban weakens SWIFT. Banning Russia from SWIFT sounds like you're banning sending money to Russia by any means, but it's not. The West could ban sending money to Russia by any means, but Europe is highly dependent on Russian imports, so they're just going to pretend to "completely cut off Russia" by banning them from SWIFT.
The most damaging thing the West could do without putting boots on the ground would probably be to confiscate Russia's central bank reserves like the US did with Afghanistan's central bank.
If you wanted to get rid of Putin ASAP, I think the most effective thing that could be done would be to put a $1 billion bounty on Putin's head, plus a promise of immunity for any past misdeeds. You have to imagine that many of Putin's close associates would rather this nutcase be dead. The West was more-or-less fine with Russia's internal authoritarianism, and Russia's oligarchs had a good thing going, but now Putin has screwed it all up for them. All of these sanctions are clearly designed to eventually make Russians angry enough to get Putin toppled, but a bounty would be a lot more effective. (I think that issuing this sort of bounty would be considered an act of war, though.)
I was surprised that Kyiv didn't fall last night, and I keep hoping that the Russians are somehow fought off, but it's almost unimaginable that Kyiv isn't going to fall eventually. The force differential is just too large. If Zelenskyy is dedicated to the idea of Ukraine fighting a protracted resistance in the same vein as Afghanistan or Vietnam, he should record a really good speech to broadcast after he is inevitably killed by the Russians, so that he can become an ideal martyr.