Hey
I do not want you to lose money so I don't want to recommend anything. Not because I have no recommendations, but because I suspect most (all) will make a loss by the time they are delivered.
oh is this just a for fun exercise and you don't want to make any profit, just want to give mining a go type of thing ?
if so, usb minors as others suggested.
They would be a loss only if you consider the current value in fiat.
If difficulty keeps increasing at the predicted rate but prices go higher and you held the coins you mined, this could be profitable for a longer time than expected.
Mining is important as it secures the network, and I'm sure most bitcoiners who bought ASICs in 2013, which was a rather risky investment, don't regret it at all.