Congrats on havin a baby sister.. i have a little brother but hez not a baby anymore.. way over that age. Here are some tips to help u protect bakugan from babys and crazy brothers or sisters:1.Keep them in your room.2.Keep them in a container. bakuboxez,Bakuracks,Tins and Spheres work.3.never show ur famly members where they are. may result to having lots missing :'( ive had it.