We've recently changed DD's room around to accommodate a single bed as I am expecting. She has now discovered that if she shoves her plastic tree house off the top of her toy cupboard she can climb up there - which is where I found her tonight, 20 minutes after lights out. The tree house was in pieces on the floor (not broken, it just dismantled itself from the fall) and DD was sitting on top of the cupboard. I freaked out and instead of coming up with a reasonable punishment I told her that if she climbs up there one more time I will put her tree house straight in the bin and she will never see it again. Now, I am reasonably confident that the temptation to climb up there will be too much for DD and she will certainly do it again. I am also very attached to the tree house: it was a gift from my brother for her first birthday and there is no way I am willing to bin it. So what do I do when the inevitable happens? I can't renege on my word... can I? She will be 3 in November so not so young that she will just forget, but not really old enough to 'get' my ill thought out threat either. Help?