Someone mentioned specifying the sizes and numbers more- so here goes- (I basically just took this from the 12 Days of Christmas swap, it seems to cover everything- so let me know if I need to be more specific or whatnot.)
Recommendations from your swap organizer:
1. I would recommend that your day 13 be candy or treats, days 12-7 be "small" items, days 6-4 be "medium" items and days 3-1 be "large" items. Less time intensive things should be made for the larger numbered days and more time intensive projects for the smaller numbered days.
Which breaks down into-
13 candy treats (if you are accepting treats- if not it will 70 small items)
57 small items
15 medium items
6 large items
Craftster's guidelines for swaps are as follows:
-Big = 3 or more hours
-Medium = 2 or more hours
-Little = 2 or less hours
-Big = A shawl, a shirt, a skirt, a set of jewelry with four to five items, a purse
-Medium = one single necklace or bracelet, a scarf
-Small = Earrings, stickers, wallets, pouches, bookmarks
-Big = $30 or more
-Medium = $10-$30 dollars
-Small = $10 or less
2. If you are sending BAKED GOODS, please only send them if you live in the USA and your partner does too. I don't want anyone's package to go MIA with the lovely customs officials. Also, if you are sending baked goods, you may leave them out of your 1st send out package and include them in the 2nd or send them in a completely separate package so they arrive in a timely manner and don't spoil or go stale. *I recommend shipping them in a completely seperate package!
3. I highly recommend that you wrap your items in a plastic bag/trash bag/ or some other protective wrapping INSIDE the box you are sending. There were a handful of swappers in last years round that received boxes from their swap partners that were WET due to the post office/ups/etc leaving them on the doorstep and a rain/snow came through AND some swappers have suggested that you also do this with anything you might send to a hot climate that might melt on your swap goodies. Wouldn't it suck to have worked so hard on a crocheted lap blanket just to send it with some delicious chocolate that melts all over it!! EEP! Sad
4. Also, if you will be shipping TO a partner that is in a HOT climate during the swap send outs, please do not include any thing that might melt on their swap goodies. Think about wrapping them in a plastic baggie or something similar.
5. Here is some info from the USPS on the Flat Rate Boxes: these can be use for Domestic and International but the rates differ for International shipments. And if you purchase your postage online at usps.com or by paypal, com you get a small discount on the postage price. The Flat Rate boxes themselves are FREE (you still have to pay for postage) from your local post office and also FREE if you get them online from the website usps.com, they will deliver them to you free of charge too!!
Flat Rate Boxes are available in multiple sizes and shapes to accommodate a variety of contents and shipping needs.
Both Flat Rate Boxes, the shirt box size (11" x 8.5" x 5.5") and the shoe box size (13.625" x 11.875" x 3.375"), can be used for domestic and international shipping.
Available to anywhere in the U.S. for $9.80
One rate to Canada and Mexico for $23.95
One rate to all other countries for $38.95
*20 pound maximum for international shipments
The Priority Mail Large Flat Rate Box, (12" x 12" x 5.5") is 50% larger than the original Flat Rate Boxes.
Other countries $49.95
The contents of the flat rate box must be neatly contained inside the box with adhesive packaging tape.
The box must close securely and retain its shape when taped with adhesive.
The shape of the box may not be changed or enlarged to fit its contents.
Some swappers last year did say that they had sent HUGE boxes to their partner and used UPS and got some good prices on shipping.
Flat Rate Boxes can be ordered free of charge from the usps here: http://shop.usps.com/webapp/wcs/stores/servlet/ProductCategoryDisplay?catalogId=10152&storeId=10001&categoryId=13359&langId=-1&parent_category_rn=11820&top_category=11820
And if you are curious about the other shipping prices for regular priority/1st class/international you can calculate postage here: http://www.usps.com/tools/calculatepostage/welcome.htm?from=home&page=0061calculatepostage
******6. I highly recommend that each of you put together a WIST. A WIST is a huge help for your swap partner. They get to look through all the things you have put into it to get a fell for what you like. Visit WISTS.com for more info.******
Also remember to read the Swap Info Guide to find out how to ship your packages and other details about participating in a swap.