What kind of equipment do you have at the house? I assume that you have a rack, but what else. I used to do them kind of like this:
https://www.youtube.com/watch?v=hkAnIpIR-Q4
-I would use a lat pull down maching, and hook my ankles like shown in the video and rest my knees where your butt would typically go it doing lat pull downs. Not perfect, but it got the job done. You can also use a squat rack or BB on the ground to achieve similar results.