Here are the latest giveaways I've stumbled on that might be of interest to shopkeepers (some carry-overs from last week, and some new ones).
POD Marketplace Giveaways
Giveaways for a gift certificate or item with your choice of design from a POD marketplace. You can usually use you're winnings to sell your own stuff sold through these PODS.
(3/28) CafePress - Item of Choice
(4/15) Zazzle $50 Gift Card
Shop Specific or Design Specific Giveaways
Giveaways from a specific POD shop or set of designs...ie, you can't use this to buy your own stuff, but can sport some items by your fellow designers.
(4/10) T-shirt From Joy's Fit Girl Wear CafePress Shop
(4/10) Spreadshirt Mother's Day T-Shirt
(4/10) Spreadshirt Father's Day T-Shirt
Other Custom Printing and Business Related Giveaways
Things that might be useful in growing your business, or if you were printing things to sell offline.
(3/31) Piczzle Custom Puzzle
(3/31) $25 Gift Card to Build a Sign
(3/31) $50 to VivoPrint Blogging Mammas
(4/1) $50 to VivoPrint Love, Life, Logistics
(4/1) $50 to VivoPrint Housewife on a Mission
(4/6) 1000 Custom Postcards (Says to promote your book, but you might be able to use them for other things...not sure)
Note, I got free entries for posting some of these.