Help me find/name certain word puzzles, image puzzles and/or brain teasers?

what are the names of the puzzles i'm looking for and where (online) can you do some for free and also where they have different difficulties of such puzzles? one kind is where they give you 2 pictures and you have to figure out what word or phrase they create. like a picture of a metal screw and a baseball would be screwball. the other type is a visual puzzle, i'm not quite sure how to explain it but an easy one would be the word "think" on the left side of a crate or something. the answer would be "think outside the box". can anyone pleeeaeeee help me? thank you so much