I’ve got two coupon codes for TGMskateboards I haven’t used them. I am not sure if they are for one time use or not. I bought a set of trucks and risers from them and they sent me this.
$5 off $50 Purchase: W0491HH07
$10 off $100 Purchase: JA3F61T74558
As far as I know, you can use these all the time for as many orders as you want. I had like a half dozen of the little coupon slips they send thinking I had all these sweet coupons…later I realized they all had the same code on them. Threw all but one away. 
Oh lol. I had no idea. Still someone can use em.