Thanks for the photo compliment - but that's all my step-dad. It helps to have a guy around who is really into photography AND you just got hooked on multirotors by getting him a Blade Nano QX for xmas
The type of stuff I'm talking about would be sorta like this:
Stand-Offs: Various sizes make for easy adjustment to your mounting scheme. They come in various lengths. I have changed mine around a few times already.
Nylon
NUTS &
SCREWS: You may end up using more of the metal versions, but these are nice to have - and seem to work well.
Nylon Spacers:
THESE are just like the threaded stand-offs, but with no screw part hanging out. Again, they come in various lengths.
Nylon washers: They don't seem to have these at HK, but I grabbed them from my local hardware store. Also, grab 4 for the props, so that the adaptor clamps to this instead of the prop directly.
WIRE: This is something you should also have a variety of. This can be purchased through Radio Shack or just about anywhere. Grab a couple spools of different colors, and different gauges (12, 18, maybe 20)
Shrink Wrap: You can get some decent stuff from Harbor Freight - but it's pre-cut short. For the longer lengths, you can get it just about anywhere - for a little more $. I think I did the whole quad with only HF stuff.
Loctite: Same as auto. I have been using the blue. The red would probably be too strong for this tiny hardware - and applying heat to the hardware more difficult with touchy motors so close etc..
Zip Ties: Get both really small ones and the larger ones. I used small ones for everything from my choptick mod to securing the thin wires. The larger ones for the ESCs etc.
Connectors: Depends on motors & battery discharge. I'd suggest 3.5mm bullets (ESCs & motors have these preinstalled - need to match on the other end). Maybe some larger ones for hefty connections. Get a few bags each.
CA: I got mine from the local hobby store. I got the type that you spray another liquid on the speed up/harden.
Battery Extension: I got a few from the guy I bought the FC from. Although it's aimed at Multiwii, his accessories are well thought out and there's plenty of them. Check out his whole site - it really offers a ton of what you need. And only $4 shipping from USA!!! This extension allowed me to plug in my battery to the on-board alarm (definitely get one of these!!!!) easier, and extend the balance-plug easier into my charging "bunker."
Hex/Allen Driver: This makes things SOOOO much easier than trying to use the L shaped type. Sears or Harbor Freight will have these.
Helping Hands: Harbor Freight or Radio Shack has these - priceless for soldering.
Old Sponge: For wiping soldering iron on while soldering. Make sure it's damp first!

Small Ratchet/Socket: These make tightening the small nuts easier of course. Better than trying to find a tiny crescent wrench

Small Organizer: This makes keeping all the tiny nuts, spacers etc easy to find - and less likely to drop them on the floor where you will NEVER find them!
If you look in the "
MULTIROTOR ACCESSORY" section of HK, they have a ton of all this stuff, and it cost pennies, especially compared to the local hardware store. They seemed to have everything I needed in the USA warehouse too!
I'll add to the list as I think of things.