Typing a post, but breaking for dinner.
<Snipped quote by NacNak>
And before anyone asks, Yaksha has put her on low priority. For being a crazy ass Majin Buu thing.
<Snipped quote by Double>
I mean, Yaksha could try to materialize one, but he would probably screw up due to being so high tech and unused to have around. Think the Supreme Kai does love tinkering so...
Scouters also serve the purpose of gathering information, and for interstellar communication, as seen when Raditz sent Piccolo's description of the Dragon Balls to Nappa and Vegeta, as well as Frieza learning of the existence of the Namekian Dragon Balls from eavesdropping on Vegeta's conversation with Nappa (as well as Vegeta in turn learning how to get the Namekian Dragon Balls from the Namekian Villages via eavesdropping on Frieza explaining how he himself did so). Vegeta also used his scouter to keep track of the time after he said he and Nappa would give the Dragon Team three hours for Goku to arrive. Scouters can also tell the location of someone, as demonstrated when members of the Frieza Force use scouters to hunt down enemies.
Some members of Frieza's army, that are too weak to use ki blasts, wear an Arm Cannon that has a wire that connects to their scouter. It is unclear what role the scouter plays in using the Arm Cannon (some soldiers who lack scouters instead have the wire connected to a helmet on their head). One explanation is that the scouter is used for aiming, though this is not expressly stated.
But scouters are so much more fun because they beep like crazy when something cool is about to happen!
Velona: *gets shot*
Everyone else: