Here are a couple of deals for you:
3D Printed 15mm Vehicles
Any tank from m_bergman’s range in PLA: £5 + P&P (subject to it being printable, which is rarely an issue).
Club banner offer
Seen those big pull-up banners that people have at shows to advertise their stand or game? They’re great, but you do need a decent graphics package to produce the files.
I have a decent relationship with the printer who has done all our club banners: if you need help getting the files together for one, and arranging the printing, I can do it for you. For a 2m high, 1m wide banner, the price starts at £50 including my time to turn your existing logo and design into a printable file.