Spent some time customising my regular cars and ended up with some uploaded artwork which is free to anyone who wants to use it.
I know some on here have done some awesome stickers to share and thought we could list them all in one place.

PH username	Gamertag	Objects	Cost
DocJock	johnnyy13	Nurburgring 'N' sticker, JustGoFaster 'JGFdonkey' sticker	both free to share
The_Jackal	TheJackal GN	PH Logo, M5 carbon roof, S15 Carbon hood, Falken stripes, CF slab, Carbon Saleen truck, Denim M1 Procar, Carbon F50GT	Various
Ikemi	ikemi007	M25Ring Logo, /////ALPINE logo, HL2 Logo	2,000-3,000cr
S3_Graham	GSI 2000	PH Logo, Ring sticker, Nismo Logo, Trackday stickers x2, dunlop logo	Free
Chapppers	Chapppers	RS & ST Logos in various colours 2000cr each, Obama Logos for crazy yanks 5000cr, Airfix Logo 5000cr each	Various
WildCards	WildCards26	CatCams Cat, CatCams Cams, PPC, Gaz Shocks, Pirelli, Abarth Scorpion, Kumho Tyres, Momo, Hitachi, AP Racing, AMG, OZ Racing, Motec, AEM, Blitz, Yokohama, Alpina, Recaro, Hemi, TVR, PH I slow down for pies, PH GB, 76 Oils, Shell, Roush, Bosch, Nismo, Euro Car Parts, Thai rent-a-car, Havoline Texaco star, Exxon, Mintex - message me for colours, not all logo's in the storefront	Various
T89 Callan	Callan Fodder	Robocop 'OCP' Logos, Peep Show 'JLB Credit' logo, IT Crown 'Reynholm Industries' logo, King of the Hill 'Strickland Propane' logo, The Office 'Dunder Mifflin' Logo. Days of Thunder 'City Chevy' Logo(free to PH'er requests)	1000cr
MuzWez	MuzWez	Confused.com logo, TomTom logo	5000cr each
VDubbin	Insomniac787	JDM licence plate, IRL licence plate, Octane.ie (WIP)	5-10,000
Sidaorb	Broadspeed	Hewlett packard, Carbon Fibre, MotoGp, Pirelli (black), aip, addison lee, ericsson, Q8, TWR, Marlboro, toyota, RACC, rally plaque	5,000cr each
Curry Burns	Curry Burns	CBR, PH Ecosse	Free
ih8thisname	ih8thisname	PH "Crossed Pistons" Smilie - *Message me in game and I will gift a stickered up car.	Free*
ih8thisname	ih8thisname	BLUE Eibach Logo	Free
ih8thisname	ih8thisname	BLUE Brembo Logo	3,000Cr
dutchgray	dutchgray	TAMIYA stars logo (will have Tamiya in letters soon to go with, only T & Y left to make)	1,000
richieboy3008	schnifter	BIG RED FISH	1,000
onlynik	onlynik	Union Flag, Confederate Flag, KITT lights, Australia Post logos, Australia Flag	Various
Sorrento205	Sorrento205	'Ring Stickers (now fixed the classic and added shadow), various others	1,000Cr
CypherP	CypherP	FedEx Logo	Free to PHers or 10k
Richard S	RSpetsnaz	TNT, HiQ & Carphone Warehouse logos. More to come soon.	free - 3,000Cr
Ricepilot	Ricepilot	Emergency ignition switch, Red Bull logos, F1 World champs, Texaco, AMG and a few Red Bull themed designs	free - 5,000Cr
Mr.Jimbo	JWaller360	Pirelli logos in various colours, message me and I'll gift you a couple	free to PH'er or 1,000
MR2AW11	SamuraiMac	Asahi Japanese beer logo, with and without borders; Evo Magazine; Sony Ericsson Walkman	various, may consider freebies to PHers
wy906	Porsche993turbo	K-Mart, Tencel, Camozzi, Courtaulds, Marlboro, Brazil flag	from 1,000Cr
Mr Red Barron	Mr Red Barron	Aviva, Tesa Tape, Orange, Go Motorsport Logo	5,000 cr