Sabrent USB 3.2 tool-free NVMe PCIe M Key enclosure for $35
I can personally vouch for this as it is the same item I currently house my 2TB NVMe hard drive in. The Sabrent brand is great and the enclosure is a hefty aluminum so it doesn’t feel cheap (plus it helps cool the SSD inside).
Right now, you can get this enclosure for a total of $35 if you apply the Amazon coupon on the product page (just check the box under the price). If you need a solid SSD to put in here, this is a good one as well.