Put 100,000 in a bank high interest paying bank account/product. Say 1%.
Use the 1000$ as a stop loss and trade(only if you know how) stocks. Or buy stocks and write calls.
Generate decent returns which will turn your money to double in a decent time frame.
You cannot get good return putting your money in the bank as bank is only good for savings not investing. I would rather advise you to put a lending business and offer an interest like 3% to 5% per month with a shorter term so you can roll your capital. I have seen many people getting rich in lending.
really hard choice if you want to open a lending service with that $100,000 funds.
beside you need to be experienced , you have a chance to get scammed and other bad things that you may have seen before. where you found many people getting rich by open a lending service? never heard that opinion.