There are many different baby shower themes. I think the most popular is probably the stork. Noah's ark is also a popular theme. There are monkey themes, bear themes, all different type of animals. They also usually have both in either pink, blue or yellow depending on the sex of the baby.
Some good themes for a Baby Boy baby shower could be easy with just blue or more creative with things like rubber Duckies,Monkeys,Prince crowns, and so on. http://www.partypail.com/boy-baby-shower-themes.html
Following are some fun ideas for a baby shower: Stork delivery theme, nursery rhyme theme, a Velveteen Rabbit theme or The Very Hungry Caterpillar theme. Just be sure to have lots of color and fun foods.
Visit http://www.partypail.com/babyshowers.html for some great baby shower items. Better yet, these items are cute, come in over 60 themes, and are affordable for any party budget!
http://www.babyshower101.com/baby_shower_themes.html explores and gives you plenty of ideas of baby shower themes that you are seeking for. Once you go through them all, you can also explore other aspects of that site as it very useful since it is specifically everything baby-shower-related.
Baby jewelry is a great gift for a baby shower! Go to http://www.cornerstorkbabygifts.com/baby-jewelry.aspx to find a great gift for any baby shower.
Examples of themes include Winter or Summer (depending when the baby is born or due!) garden-themed, eco-friendly or the good-old-fashioned boy or girl themed shower.
I would think most games would be gender neutral at a baby shower... but you could decorate onsies with boy themes (trucks, airplanes, dinosaurs). Here is a website with some baby shower games! http://www.babyshower101.com/baby_shower_games.html
Some ideas for baby shower parties are animal themes, such as a jungle theme, or a Noah's Ark theme. You could also so turtles, elephants, monkeys, or giraffes.
Some baby shower theme ideas include animal themes. These can include: butterflies, ladybugs, safaries, monkey, etc. Noah's Ark is a cute idea as well.
There are many fun and easy baby shower games. These include such favorites as: baby shower bingo, scrabble, and scramble are all great games. Enjoy these games!
Not sure what kind of ideas you are looking for. Crafts? Cakes? Decorations? Themes? Games? Here is a great website to search: http://www.babyshower101.com/baby_shower_food.html Hope this is of some help.
Some ideas for a boy's baby shower would be themes such as cowboy, trains, circus, baseball, football or any other sport. You can buy decorations and paper goods that relate to the theme you choose.