Example embodiments provide a device that includes a rigid block body with a reservoir with two angled walls, a channel dug into a center axis of a bottom of the two angled walls, a stop wall at one end of the channel and an open end at a second end of the channel, a hole at a bottom portion of the stop wall, and a cut-out funnel shaped area on an opposite side of the stop wall from the channel, and the cut-out funnel shaped area funnels into the hole.