Whatcha all Windows users using for backup up your main PCs?

I'd like to backup most of my files, but I have less than 15GB
space free on a 250GB HDD. Can't add an extra HDD/SDD or
replace the existing HDD at the moment (PC is a bit hard to
access).

The goal is to send the files to an offsite server, automated.
But I am not interested in paying for a VPS for that. I'd like
to encrypt the files myself and upload a bundle.

I experimented with 7Zip and gpg, but found out that 7zip
doesn't support pipes.

Is there another rudimentary grassroots way to achieve this?

Since gpg can only input one file at a time, I was thinking of
building a FOR loop to create a gpg encrypted version for each
file and pipe that to Winscp.

This is for a Win7 environment, BTW.

--- OpenXP 5.0.57
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August, I use Avast v11 for XP
The XP box had 250GB HDD when bought.
Some years back it was getting nearly full so I cloned the 250 GB HDD to a 2TB Internal HDD and switched them
Kept the old 250GB drive jic...
Ed
--- SBBSecho 3.20-Linux
* Origin: capitolcityonline.net * Telnet/SSH:2022/HTTP (1:2320/105)