Wow COV - the cakes on your profile are amazing! You are tres talented.
You are all right, bought cakes just aren't as nice. I shall make one. And <mutter mutter> it won't be appreciated because this is my family and I pretty much have a choice of (a) being ribbed for copping out and buying a cake, or (b) making a cake and having everyone be rude about it. <sigh> It's a good job I love them really .
Like the idea of 4 X swiss roll cakes layered. Now, how to decorate?
oh and you can choose,whether choc or vanilla sponge and icing, what colours you'd like, what filling etc. they make them fresh the day you want to pick it up, and if you dont want toxic dont order the bright colours.
Make. Re the size, could do a tiered cake - ie 2 or 3 cakes, either round or square, of different dimensions piled up - means it won't fall over and you can make a decoration going down the sides or put ribbons round each layer, or whatever. Make sure you put it on a decent cake board too - makes it look much more special