This is another robot i made when i got bored
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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
Step 3: Wire It
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