Well Trump could stop the exchange of intelligence data.
Yes, that's an interesting aspect, not only for Ukraine. With Trump as president, the other NATO countries and USA's other allies around the world may have to try to disentangle their intel services from USA's because of the obvious security risk. That's going to be really messy and may even be impossible. And if it doesn't happen, Ukraine will still have access to US intel through NATO.
Ending sanctions on Russia, especially allowing full energy sales and sales of chips and weapons.
Oil sanctions are mainly enforced through the shipping and insurance companies. Those are mostly European owned so there's not that much the US government can do to undermine them.
As for providing Russia with advanced technology and even weapons, i hope and believe that would be one step too far even for most of the crazies in the Republican party. It would certainly be dozens of steps too far for any of USA's current allies.
It would also be difficult to find ways to do it legally. Take the Abrams tank for example. It has a German gun and there's not a chance in Hell Germany will ever give permission to have it exported to Russia. It's a similar story with most advanced western weapons systems. Most of the corporations are nominally US and the factories are in the USA but a significant part of the components and technology are European and quite a lot of the stock is European owned too.
As for microprocessors, USA is a net importer of them with 12% of the world's manufacturing capacity and 46% of the market. I doubt they have many to spare for the Russians.