Checklist for buying accessories for a new bike

[PGF2016]

Here's my list with some conflicting items:
Rechargeable lights (USB for convenience) - 2 front, 2 back for redundancy.
Extra light strips for arms / backpack as needed.
Decent pump.
Saddle bag with spare tube and tyre levers.
Helmet
Glasses with clear and tinted lenses (I use photochromic lenses)
Waterproofs
Winter gloves
Overshoes

Edit: This post is more about accessories than the bike itself.

 

[Buddyboy]

Bell - if not already supplied with the bike.
Any sort of side reflectors - the more the better- large ones that clip between the spokes are very noticeable
I also find a back light on the helmet is very noticeable - higher up seems to stand out a lot more that (or as well as) lights on the bike..