After upgrading to Windows 10, the taskbar icons look cramped together:
How do I make it look like on Windows 8?
After upgrading to Windows 10, the taskbar icons look cramped together:
How do I make it look like on Windows 8?
AFAIK there's no way to do this without 3rd-party modifications. I looked and looked, but the best I could find was 7+ Taskbar Tweaker. It enlarges the icons back to the size you're used to:
(No underline and modified icon images are not from 7+ Taskbar Tweaker)
As for the start menu, ClassicShell lets you upload a custom start menu icon, which seems to do the trick. It's packed with a lot more features than that though, and while you can disable them (i.e. custom start menu), I'm not sure if it'd be your cup of tea if you're only going to use a single part of it.
Right click on the bar and choose Properties from the menu. Remove the check from "Use small taskbar buttons" and then Click Apply.
If what you want is more space between the icons themselves, you'd have to apply some kind of third-party skin.
To change the size of icons in general go to Settings -> Display and there is a slide bar that lets you do this. Hope that helps :)