Hey! I cosplayed Scout for the first time last year a LOT and he'll be making a come back this year! I'll give you my tips for how I made Scout! (I'm in the UK so you will have to search all these on the american version of the site :/)
Head: So you already have the hat, that's good! Now for the headset, you are gonna have to get a pair of cheap xbox headphones like these
http://www.ebay.co.uk/itm/New-Live-...641?pt=LH_DefaultDomain_3&hash=item1e841895f1
Break of the small pad on the side and the mic and keep them and then get these ear defenders
http://www.ebay.co.uk/itm/Ear-Defen...t=LH_DefaultDomain_3&var=&hash=item27ea854b01 and break the right ear off. Mask the parts of the ear defenders you don't want to turn orange and spray the main part with orange spray paint. Let it dry and to do some touch ups so that it looks neat and tidy, use a black sharpie/permanent marker. Then it's just a matter of spray painting/covering other black parts with black tape or anything you can find. Then drill a hole through the pivot part of the micro and drill a small hole in the middle of the left ear defender and add a screw so the mic can rotate
Body: Find a short sleeved round neck tee and roll up the sleeves a few times and sew a little bit just to keep it in place. Try to get a baggy tee so you can tuck it down your trousers and then puff them out.
Get a pair of dogtags of ebay, simple as that
For the hands, get some boxing wraps. I tried it with cotton bandages and while they did look good, they got really dirty really quickly, got all weirdly tangled and auuuugh, just you the boxing wraps. They stay on better and are easiler to maintain
http://www.ebay.co.uk/itm/Boxing-Ha...814?pt=LH_DefaultDomain_3&hash=item259531401e or
http://www.ebay.co.uk/itm/1-Pair-Bo...470?pt=LH_DefaultDomain_3&hash=item417db5febe (second ones are better as they have a velcro strap so they wont go anywhere)
Bag: Get a guitar strap and a black gym bag from american appareal like this one
http://www.ebay.co.uk/itm/American-...Domain_3&var=600468744094&hash=item463740a222
remove the gray straps and see the small black tags at the end of each zip, cut on end of each and fed the black square from the square strap through and then sew again (I'll upload a picture of what I mean later when I'm out of school)
Legs: The belt is just a plain black canvas belt
http://www.ebay.co.uk/itm/CANVAS-BE...Domain_3&var=520525078721&hash=item339cb57136
The trousers I used are khaki coloured sweatpants, they'r ethe closest colour to scout's actual colour also the sweatpants are easier to use and look more like scouts rather than jeans. Check your local sports shop, that's where I got mines!
http://www.ebay.co.uk/itm/BNWT-Holl...Domain_3&var=510634372215&hash=item4ae8a2ad17 (ones like this colour)
The socks are just plain football/soccer socks you can pick up anywhere
For the shoes, you can get black adidas taekwondo shoes and remove one of the stripes and then colour any other parts you want white with black shoe polish
http://www.ebay.co.uk/itm/ADIDAS-Ad...285?pt=LH_DefaultDomain_3&hash=item27fdcaddf5
or if they don't have your size and they are too expensive you can get these shoes, paint them black with black shoe polish/black leather paint then use white tape for the stripes or spray paint or plastidip because white shoe polish will be ineffective and acrylic paint will just fall off.
http://www.ebay.co.uk/itm/Womens-Me...t=LH_DefaultDomain_3&var=&hash=item35e2766c61
The metal bat i used was just a cheap plastic one i got from poundland so it's just a matter of looking in local shops. If you want to make any weapons, there are plenty of tutorials online that you can just even look at and modify to fit the shape and style of the gun you are trying to make. If it's like a pistol, you can try to make it out of foam because some conventions are really strict with props. You could even find foam guns somewhere on the internet I'm sure. I've seen one cosplayer with them
Hope this helps!