Yes,I do. I have collect Seven-eleven's stamp for two months. I collect its for changing the premium gift such as a set of jug,a set of dishes and a couple chair. For this year I change my stam for a set of jug and a set of dishes.It's 150 bath of stamps. I think it's so hard to collect its because I have to buy the goods in 7-11 for 50 bath then I will get 1 stamp. If I buy the premium gift like this in the market I think it'll cheper than collecting stamp. Last yesr ,I collected a Mickey Mouse stamp;I got a Mikey chair,a box set and two bolw ste.I like them so much.