新加坡采购需求：和纸胶带、计划贴纸、牛皮便签、日记卡、翻领别针、金属书签

I'm looking for a custom keychain that measures approximately 7cm in length and 2.5cm in height. The keychain should feature unique designs on both sides, allowing for a creative and attractive appearance. It's essential that each side showcases different artwork or designs that can appeal to a diverse audience. Please provide me with options regarding materials, color schemes, and potentially different design themes you can offer. I'm interested in understanding the minimum order quantity, production timeframes, and pricing for this item. If you have any examples of previous work or prototypes, that would be helpful. Looking forward to your response!