I have 2 nephews celebrating their 6 and 9th birthdays next Friday. I am fairly new and am limited on the supplies that I have to work with and my level of skill. I am hoping that someone might be able to give me some ideas for a Lego themed cake for the 6 year old and a baseball themed cake for the 9 year old.
Make a baseball stadium out of huge lego blocks, either cut from sheet cakes or loaf cakes.
Theresa 
If it's 1 cake misladys idea sounds amazing... Do you use fondant or Buttercream? If you look at my pics I made a Lego cake out of fondant the Lego pieces were fondant rolled out and cut into rectangles I used a piping tip to cut out the circles on the legos. I hope this helps
I think she said two cakes in her post. I've looked at your two photos and I read in your post about your limited supplies and skills, so I hope these are right for you:
http://www.flickr.com/photos/24367079@N04/3554022201/
http://www.flickr.com/photos/23808644@N02/4642996078/in/pool-1529327@N22/
http://www.flickr.com/photos/hartsdelights/3355314578/
http://www.flickr.com/photos/bloomincakes/3801660442/
http://www.flickr.com/photos/cakeboxsoc/3491456606/
http://www.flickr.com/photos/twopartssugar/4639421809/
http://www.flickr.com/photos/customcupcakestands/3786996338/
http://www.flickr.com/photos/lecake/4117896143/
And just so that you know, and in case you can get one, there are Lego ice cube trays that you can use to make the fondant legos and figures.
http://www.google.com/search?client=safari&rls=en&q=lego+ice+cube+tray&ie=UTF-8&oe=UTF-8#q=lego+ice+cube+tray&hl=en&client=safari&rls=en&prmd=ivns&source=univ&tbs=shop:1&tbo=u&ei=Iv4oTevPLsSAlAfc2ICLAg&sa=X&oi=product_result_group&ct=title&resnum=1&ved=0CC4QrQQwAA&biw=1015&bih=784&fp=fb0beceb888e9115
Given the short timeframe you have and your own assessment of your skills, I'd stick with simple.
The easiest Lego cake to make (but people are really impressed by it!) is a single large brick. Bake a rectangle (you might bake one large rectangular cake, cut it into thirds and stack the thirds together -- voila, a three-layer cake with about the right proportions for a Lego brick) and then add the round studs on top. Depending on the size of your rectangle, for the studs you can use cake or brownies or thickly rolled fondant cut out with a round biscuit cutter, or premade round cookies, or marshmallows cut in half. The trickiest part is frosting the studs; I found that putting each one on a flower nail helped, and then I froze them before placing on the cake so that I could handle them without munging up the frosting.
The easiest baseball cake is probably a baseball. Use a ball pan, frost white and ipipe on the "stitching." A big bat probably wouldn't be too hard either. Or you could do cupcakes -- they are already round -- and top them with fondant discs that look like baseballs. The "stitching" would be drawn on with a food coloring marker.
Holly
OH THANK YOU ALL SOOOOO MUCH!!! so many ideas to play with, unfortunately one thing I am lacking is a ball pan, I wanted to get one for the baby bump cake but finances just wouldn't allow. I will post pictures when I am done with the cakes thanks again for all the great ideas and input!! 
ok so sorry it took me so lon to get the pics but things have been hectic.
here is a link to the Lego cake http://cakecentral.com/gallery/1918960
and here is a link to the baseball cake http://cakecentral.com/gallery/1918963
The icing on the baseball did not want to work with me plus i had a very shaky hand at the time.
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