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Below is a supplies needed for collection of various types of biological samples. This list is not exhaustive nor is meant to imply endorsement, but can be a starting point for planning research activities.

Dried Blood Spot (DBS) Collection

Whatman 903 Protein Saver cards
There are 2 versions:  one with 5 circles and one with 4 circles (the pull-apart card).  Either can be used for research purposes.

Dessicant packs
Typically, one dessicant pack is placed in with one DBS card in an envelope for storage. 
Whatman dessicants: Item #10548234

Both of the above are available from the following vendors, as well as others:
http://www.whatman.com/903ProteinSaverCards.aspx
www.vwr.com
www.fisherscientific.com

Lancets
We recommend using a lancet with a blade, rather than a needle, and maximum depth in order to provide maximum flow for DBS collection. 
BD Microtainer Contact-Activated Lancets (Blue); Item # 366594

These lancets are available from multiple vendors.

Additional supplies with no specified manufacturer or vendor:
Small plastic bags that seal tightly to hold individual DBS cards (typically “sandwich” size)
Large plastic bags to hold sets of individually packaged DBS cards (typically “gallon” size)
Gauze squares (typically 2 x 2 inches)
Alcohol wipes
Bandages
Sterile drapes (typically 18 x 26 inches)
Gloves (to protect data collector)

Saliva Collection

Salivettes
SARSTEDT salivettes are designed to allow easy use by participants and then processing by the lab.  There is a general version and then some specialized versions that may be useful for specific assays.

These are available from multiple vendors as well as the manufacturer:
http://www.sarstedt.com/

Additional supplies with no specified manufacturer or vendor:
Plastic bags that seal tightly to hold sets of salivettes (size depends on the number of salivettes to be collected)
Labels to identify specimens

Hair collection

Supplies needed for hair collection are commonly manufactured, so no vendor is specified:
Aluminum foil, cut into sheets as specified by the lab
Cotton string, thick enough to hold when tied around a section of hair (It is important to be sure the string is not too slick or slippery, as it will not hold the hair securely)
Scissors
Combs
Gloves
Plastic bags that seal tightly to hold multiple foil packets