My feel guide:
Viking: feel for the triangular piece that serves as her dress. Once you've found that, look for the shield to make sure it's not the bride.
Bride: feel for the dress too, but then make sure that it doesn't have any parts that the Viking has: shield, horned helmet.
Galaxy patrol: this one is easy. The shoulder pads are a big piece and easy to find. To double-check, find the helmet (it has an opening below for the neck and one in front to see out of)
Aztec: easy too. Feel for the gigantic eagle headpiece, and to double-check, feel for the spear (the point is twisty)
Grandma visitor: feel for the legs, which don't move. The basket is easy to find too.
Swimmer: try to find the medal
Bunny: try to find his hat, which has two ears sticking out of it
Daredevil: feel for the helmet, which is kind of similar to the galaxy patrol's. To make sure it isn't the galaxy patrol, make sure the helmet is more smooth. You could also try to find the cape.
Ocean king: the trident has three points, and can be identified easily. The tail is easier to find, it's curvy, and is a big-ish piece.
Jungle boy: feel for the monkey (mainly the monkey's arm, which is outstretched)
Bagpiper: this one is tricky, but try to feel the bagpipe, which is round-ish with the pipes sticking out of it. His hat can also be identified by the knob on top.
Tennis ace: easy! Racket! (the racket has a flat round end and a long handle)
Hippie: feel for the long hair and the flower stalk, which has three stems.
Nerd: look for the flat laptop computer, or the round mug with a handle that sticks out.
Evil knight: look for the long sword, or the big oval shield.
Punk rocker: the guitar is the key. It has a Triangular end, which comes out in two halves. I can't really describe it, but you'll know when you've found it.