I post these deals quite often over on Cheapies. 

POLY MAILER
- 50 Custom 254mm × 330mm Poly Mailers
- USD$9 or you can pay in AUD AU$13
- Cheapies comments here

DIE CUT STICKERS
- 10 Custom 76x76mm Die Cut Stickers
- US$0.80
- Cheapies feedback here

CUSTOM MAGNET (via AppSumo) 
- 3"×3" (7.6cm) Custom Magnet (Single Design) 50-Pack
- US$9
- Cheapies post here

Must use code within 60 days. Only one purchase per customer is allowed.

• Purchase the deal at AppSumo
• You'll receive an email with a code
• Grab the code and go to https://www.stickermule.com/voucher
• Complete magnet design
• Discount will show at checkout. $0 delivered