<prompt> Human: Hello everyone, first off thanks for any help you can offer. Ive been fixing cars professionally for over 15 years now. I started in high school with mowers and outdoor power equipment, bringing them back from the garbage and selling for a little money. Well over the years Ive built up a decent amount of cash in my home safe, from the profits on flipping. Ive been slowly depositing some of the cash into my personal savings over the years, but I still keep a larger amount at home and at the shop because I cant put it all in at once. I was wondering if anyone had any ideas as to what I should do with the cash. I was planning on depositing 5-6k at a time into my accounts for a while, but Im not sure if theres a better way to go about it, and I dont want to raise any red flags. I am looking to invest a portion of it into collector cars that will appreciate. Like I said I fix cars and having a little collection is fine by me. I already own an E46 M3 competition, and E36 M3 sedan manual. Im looking into purchasing the E39 M5, or earlier, as these cars I feel will be on the upswing big time for the next 5-10 years. Would slowly putting it all into my savings account be the best bet, and then transferring it out to my high interest savings, stockscrypto, or self funding my 401k? I would prefer to turn the cash into appreciating assets, but besides cars, most assets want money in the bank or a finance. Thanks again, hope Im not missing anything.  <response>: Unless you are not declaring the income, in which case you should be, just deposit the money. 