My oldest grandson, Jack, will be 5 on Saturday and, true to form, he requested a fireman cake. Last year he asked for the same and I made him a great cake, trouble is I don't think this year's will be a patch on last years! (It wasn't my design and I would like to give that person credit but I haven't been able to track them down.) Photos below are from last year.
Saturday's cake will be a big slab with an apartment building. I'll put some candles inside so it looks like the building's on fire! Sounds good in principal. Here it is under construction.