Metal deed box/tin chest/tin trunk (Hutton le Hole YO62)

My daughter has asked me to make a memory box for her newborn son to hold keepsakes of his childhood. Ive made them for my other 2 grandkids but I'm really struggling to find an appropriate sized tin box, all the trunks/chests I can find are huge. I'm looking for one about a foot or just over high, the same front to back & no more than 18 to 20 ins long. A large deed box or small chest would be ideal. I dont mind if it's scruffy, battered or dented, whether it has a lock or not, or if it has a lock whether it has a key but as it is to be a child's box I'd rather avoid ones with torn metal or rust holes please! Many thanks for reading.