1) On multiple occassions, Harry talks about angling his shield to redirect forces, whether it is to knock a bullet harmlessly to a side or reflecting the pellets of a landmine.
That is pretty much just a block straight from the books. If you want the bullet to hit someone else, you could do so by using the spell redirection rules, if you didn't use the shield to block.
2) Specifically during Grave Peril, Harry redirects one of Bianca's spells into another Red Court vampire within the same zone.
That would probably best be done by blocking the spell first and then doing a similar spell on your turn. I would probably let you declare the spell as an aspect, so you could tag it in the subsequent spell.
3) In Proven Guilty, Harry noted having muscle and magical force behind a physical blow (specifically when taking out the Alien Phobophage).
As someone said before, a fists or might declaration to tag for a magical attack or a magical maneuver to tag for a fists attack. I'd probably go with option a, because that should be possible to do in 1 exchange instead of first building up a maneuver spell.
4) In Changes, after becoming the Winter Knight, Harry was blending fire AND ice in a spell, and bounced it across multiple targets.
A spray attack using fire plus
the bonuses from both sponsors
. Or a zone attack that is described as a spray attack, because it is cooler. They are only mooks, so they probably don't have that much resistance anyway, so you can put a lot of power into increasing the range.
5) Little Chicago. I know many people bring it up, but it is still a fun topic to talk about.
Simply a focus for tracking spells. There is a list somewhere in the books, that gives approximate sizes in relation to the power of a focus item. If I remember the list correctly, it should be around 7-8 if not more.
Hope that helps.