I came up with some ideas as well.
An alien TV remote. Not powered, but looks like a weapon.
An electronic book that copies any other book it touches for more than an hour. It has millions of books, but does not translate the books into the long dead alien race's language. DC 20 to decipher the alien language of the book. Most of the books are in that language, but others are in various languages, known and not known. Everything from children's books to manuals, to news, to fiction, to history to almost anything. Really useful stuff should be hard to decipher. Figuring out how the book copies things, should be at least a DC 40+ and take serious government labs decades to figure out.
A water bottle that cleans any water placed in it after 10 minutes, uses d3 rare items to refill the cleaner equipment. 100+d6 uses
A set of organic goggles with dials and knobs on the sides. An elementary school curriculum for a long dead alien race. Once placed on the head and activated, it telepathically downloads the info into the vict/ um subjects head. This takes 30 minutes. If the goggles are taken off before it finishes, the subject must make a will save (dc 20) or be knocked unconscious for d10 hours. If the save is made the subject is still stunned for 6+d10 minutes. Once the goggles have finished downloading, the subject will only speak in the alien language for d6 days before it fades. Otherwise, it imparts no other special knowledge. If the subject has someone else to speak to and spends the appropriate skill points, he can learn the language to add to the ones he already knows.
Alien tunic and pants that resist water, smells and stains with a strangely compelling pattern on the front. The alien race had four arms and three legs. The alien letters on the front translate to "Aloha"
A deck of cards with microcircuitry inside. With a control ring, the card in hand can be changed to any other card value. Tapping the card cycles through the card values. The ring is not included. With current tech, it would take a large computer and transmitter to work. The transmitter would only work over 20 feet. DC 30 to set up the computer and transmitter. DC 25 computer use check to change the correct card to the correct value.
A small, black, shiny alien cube. DNA encoded to an individual of a long dead alien race. In a lab it is a DC 28 to decipher the DNA code and DC 20 to manufacture the correct sequence. Once activated the cube is a travel clock set to the 33.01455 hour day of the long dead alien race. d6 alarms are set to go off each day for 10 minutes (set alarm time randomly). Once activated, the alarms can only be deactivated telepathically.
A small bottle of gel that glows faintly. It is a hair care product for a long dead race. Can be used by someone with human type hair to hold it in place and will have the hair slightly glow as well. The hair will look luxurious for d12 hours, but will severely dry out the hair resulting in temporary hair loss if not treated. DC 5 medical check. Can be used by Minbari as strong bone cleaner.
A laser pen. Writes on paper by charring the paper. It is permanent and can not be erased without repairing the charring on the paper. The laser only works when in contact with paper.
A large ornate wooden dresser made of a fragrant wood. (Like an alien version of cedar.) Equipment in the floor of each drawer freshens the clothes in the drawer once a day, effectively cleaning the clothes of stains and odors. Not currently powered.
Kizarvexis
P.S. Five more from me.
A matched pair of ceramic bracelets with low quality gemstones set in them. When the gemstones are pressed in a certain order, the bracelets vibrate ever so slightly, in varying patterns. (They are an alien version of an IPod, playing music for a race that has 'ears' at the end of appendages. DC 18 to figure out it the patterns are music and DC 25 to translate the pop tunes.
A two meter ring of light metal that can fold into a small package. There is an array of crystals set evenly around the ring. Twisting the four larger crystals at the cardinal points activates the ring. An opaque curtain shines for 3 meters above the ring forming a dark curtain above the ring. The curtain only blocks visible light and is easily stepped through. (Once inside, changing to bathing attire while on an open beach is easily and modestly done.)
A flat, metallic disk. When a dial is turned, on the bottom of the disk, the disk expands into a 16 ounce cup. Squashing the cup back into a disk, resets the disk.
Two adjustable loops of leather with circuitry on them and a few dials. Place the loops together and twist the dials and they are connected by a colored force field line. The dials can change the color of the force field line, which changes it's frequency. Multiple sets of loops are found together. Force field lines of different colors can pass through each other. Lines of the same color can not. Alien pet walkers used these for walking multiple pets.
Small crystal cube the size of a six-sided die. Touching all six sides at once with bare flesh activates the cube. A small 6 inch hologram of an alien appears for one minute speaking in his language. Translation reveals it is a business card for a the alien.
Plus one from my daughter.
A matched pair of wide, heavy metal belts, made out of linked metal plates, that would fit a large creature. One flat disk with a gem stud that will fit one the buckle of either belt. In this game, one person would put the disk on their belt and would be the hider. The other person is the finder. If the finder doesn't find the hider (who has the disk) within a set time period, the finders belt sends out an explosion of energy to the wearer. For the crystalline aliens who wore these, the explosions would only sting. For normal, fleshy races, it causes 1d6 damage.
Kizarvexis