Abstract: A hydroponic cultivation receptacle comprising a tray 22 having a board 22a to place seeds of small vegetables like sprouts has plural drainage holes 23 on the board 22a and upper rims of said drainage holes 23 to form protrusion 24 so as to retain a little amount of water to dip lower part of the seeds placed on the board 22a. Accordingly, water remained to the height of protrusion 24 retains enough water to keep lower part of the seeds by surface tension while most water provided inside tray 22 drained from the drainage holes 23. Protrusion 24 prevents the seeds from moving from the place they are uniformly placed and the problem of moving of the seeds when water is poured is also solved.

Abstract: A magnetized ear piece composed of a first and second pivotally interconnected member normally biased into a closed position and wherein one of the members is provided with magnet means to confront the ear lobe of a wearer and one of the members includes decorative means exteriorly visible when in use.

Abstract: The arrangement for the pre-sorting of household garbage comprises replaceable garbage sacks which consist of at least two sectional sacks having different distinguishing marking and forming separate garbage compartments which can be separated from each other. As a result of these steps it is possible to pre-sort resulting refuse consumer-just even more carefully and extensively in order to then dispose of the garbage components through recycling, decomposition and more ecologically-favourable incineration.