Jameco bargain bin

A couple of items on closeout that might be of use to people here (especially if you live in the US and Canada):

https://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?catalogId=10001&freeText=2197821&langId=-1&storeId=10001&productId=2197821

(It has a linear regulator and an adjustment screw that will probably allow it to produce other voltages if desired - although I haven't tried that yet.)

https://www.jameco.com/z/10DRCS5-ICO-Rally-Power-Line-Filter_2197880.html

(These are only rated for 10 amps, unfortunately, but they're cheap for a two-stage, 1 mH filter from a reputable brand.)