For those with kids in sleepaway camp... I've found that nothing makes kids happier than frequent packages. So what better opportunity is there to exploit free shipping with Amazon Prime. Unfortunatey amazon put an end to free prime shipping on cases of water, but there still seem to be plenty of opportunities to send snacks (like the popcorners deal last week), toys, games, etc., to solidify your place as "parent of the year", "favorite grandparent/uncle/aunt", etc.
I've started off with a few links (below), but please post links to anything you find on Amazon that's cheap enough to order on a whim (with Prime/free shipping), and a sleepaway camper might enjoy receiving.
Some cheap toys/gear for sports fans:
http://www.amazon.com/s/ref=gb1h_tit_c-2_3182_39897c16?rh=n%3A3375251%2Cp_83%3AP1NAG809HRZ579XDP%2Cn%3A!3375301%2Cn%3A3386071%2Cp_6%3AATVPDKIKX0DER%2Cp_36%3A-1000%2Cp_8%3A2229060011&bbn=3386071&ie=UTF8&qid=1404867766&rnid=598251011&smid=ATVPDKIKX0DER&pf_rd_m=ATVPDKIKX0DER&pf_rd_t=701&pf_rd_s=center-2&pf_rd_r=1QGPXP7W2ECAFG3CMH2V&pf_rd_i=30&pf_rd_p=1713993182#/ref=sr_pg_1?rh=n%3A3375251%2Cp_83%3AP1NAG809HRZ579XDP%2Cn%3A%213375301%2Cn%3A3386071%2Cp_6%3AATVPDKIKX0DER%2Cp_36%3A-1000%2Cp_8%3A2229060011&bbn=3386071&ie=UTF8&qid=1405356576Folding stool ($6.16):
http://www.amazon.com/Logo-800-JG24-90-Nascar-Gordon-Stool/dp/B00E57IOTI/ref=sr_1_92?m=ATVPDKIKX0DER&s=fan-shop&ie=UTF8&qid=1405356456&sr=1-92Flashing LED Bumpy Rings ($5.86):
http://www.amazon.com/Flashing-Led-Bumpy-Ring-Pack/dp/B004083ELK/ref=sr_1_5?s=toys-and-games&ie=UTF8&qid=1405360609&sr=1-5UNO Card Game ($6.95):
http://www.amazon.com/Mattel-42003-Uno-Card-Game/dp/B00004TZY8/ref=sr_1_4?s=toys-and-games&ie=UTF8&qid=1405360609&sr=1-4Water Balloon Tying Gadget ($6.25):
http://www.amazon.com/Imperial-Toy-Tie-Not-Balloon-Filling/dp/B007AW55MO/ref=sr_1_11?s=toys-and-games&ie=UTF8&qid=1405360609&sr=1-11LED Finger Lights ($6.59):
http://www.amazon.com/LED-Finger-Lights-40-pcs/dp/B0045H0L1W/ref=sr_1_13?s=toys-and-games&ie=UTF8&qid=1405360609&sr=1-13Underwater Diving Rings ($5.99):
http://www.amazon.com/Intex-55501-Underwater-Ring-4-Piece/dp/B004LOLDE8/ref=sr_1_19?s=toys-and-games&ie=UTF8&qid=1405360609&sr=1-19Light-Up Bubble Gun ($6.32):
http://www.amazon.com/Rhode-Island-Novelty-Light-Up-Transparent/dp/B004D5EMD4/ref=sr_1_21?s=toys-and-games&ie=UTF8&qid=1405360609&sr=1-21Novelty Mustaches ($6.29):
http://www.amazon.com/Allures-Illusions-Mustache-Novelty-Mustaches/dp/B0087FMSNM/ref=sr_1_56?s=toys-and-games&ie=UTF8&qid=1405360718&sr=1-56Light Up Fiber Optic LED Hair Lights ($4.29 - not Prime eligible, but free shipping anyway):
http://www.amazon.com/6-pack-Light-up-Fiber-Lights-Strands/dp/B0092BWWG8/ref=sr_1_58?s=toys-and-games&ie=UTF8&qid=1405360718&sr=1-58Angry Birds Remote Control Balloon (requires helium) ($8.75):
http://www.amazon.com/Angry-Birds-Air-Swimmers-Turbo/dp/B009CIJ17E/ref=sr_1_80?s=toys-and-games&ie=UTF8&qid=1405360752&sr=1-80Giant Inflatable Pickle ($5.09):
http://www.amazon.com/Giant-Inflatable-Pickle-36-inches/dp/B009LJ6SIY/ref=sr_1_56?s=toys-and-games&ie=UTF8&qid=1405361287&sr=1-56Glitter Maracas ($5.97):
http://www.amazon.com/Rhode-Island-Novelty-MAGLIT5-Glitter/dp/B004GBD4UM/ref=sr_1_24?s=toys-and-games&ie=UTF8&qid=1405361179&sr=1-2440 Bags of Popcorners ($15.84):
http://www.dansdeals.com/archives/46322