Abstract: A promotional tool and a vehicle used to distribute products, information, gift certificates, prepaid phone cards, and coupons for businesses, corporations, retail establishments, universities, and sales personnel. A customized gift card displays professionally created artwork, logos and graphics that best portray the provider's intent for the overall design. The card is folded, die-cut and glued to receive a multimedia disc, gift certificate, coupon or phone card. A Multimedia Disc is included as a gift with each card. It is a digital medium that contains professionally recorded digital music and a variety of audio, video, and graphic information regarding the provider. It is placed in the card so the label which supports the card's overall design, is in view. A gift certificate, coupon, or a prepaid phone card can be placed in the card for easy accessibility and scanning by a retailer.

Abstract: A device for mixing, homogenization, resuspension, disintegration, disruption, or centrifugation of media placed in test tubes, including: a rotor having a replaceable closure; a driver having a substantially vertical shaft; a sleeve having a spiral groove and a bush moveable along the sleeve, moving the rotor up and down; and a stationary ring with extended teeth faced toward the rotor. When the rotor is in its lower position the tubes engage the teeth and receive strikes which induce vigorous motion and effective mixing of media inside the tube. When the rotor is in its upper position the tubes are disengaged with the teeth and rotation of the rotor provides centrifugation of the media.