I just had this problem about 20 minutes ago. I needed to shower, but my DH is out running errands, and LO is too wild/big for his bouncy. So I took our highchair (cosco brand folding one) in the bathroom and put him in that. :-?? It's not the easiest thing to do, but it worked really well. It also helped that my DS1 was in there entertaining him, but I could have just as easily put some puffs on the tray and kept him happy that way.
Re: Sorry, double post!