This is another robot i made when i got bored

Step 1: Materials

<1>Button cell Battery
<2>Mini Fan motor
<3>Hot glue gun
<4>Plastic Prize cup thingy from pizza plus
<5>tiny piece of tape

Step 2: Hot Glue

Push the hot part through the top Then insert your motor and seal it with the hot glue so water cant get in

Wire it to the tape and battery so it goes without touching it and then seal it and set it in your pool bath,Etc. Have fun