I'm going to try my hand at my first tiered cake using fondant for my daughter's birthday.

Her smash cake will be of a toy block, like the one in the photo (different things on each side, a 1, an "A", etc.).

However, I'm at a loss for ideas for what to make the bottom tier.

Help!

How about a toy box so it would look like the block is either coming out of the toy box or sitting on it. Or make it look like it is sitting on two more blocks. Make the bottom look like two blocks and sit her single block on the top in the middle.

YOUR DAUGHTER IS ADORABLE!!! i WOULD LOVE TO MAKE A CAKE FOR HER TOO!

Why don't you do a round tier for the bottom. Then all along the sides you can put Happy Birthday and her name with cute little flowers and such in the same colors. I hope you get some good ideas! (mine is not great!)