Baby Shower Idea HELP!

I'm in charge of the decorations for my Sister-in-law's baby shower! The nursery is Jeep themed so we incorporated that into the shower (Jeep adventures) but I'm having so much trouble with this theme.

We wanted to make all the decorations things that could be used for the baby. I've already made some onesies to hang from the tables...

My mother-in-law had an idea of using baby toys/stuffed animals as the centerpieces for the tables with balloons as well.

Our invitations have little woodland animals on them. One of her friends is going to make a Jeep diaper cake. The cupcakes are being made by another family member and we have no idea what theme they will be, though we told her about the jeep adventure theme.

My questions is......is this shower going to look messy if there isn't one coherent theme throughout the centerpieces, tables, and cupcakes??