A question about aliens and patterns...

If you have NRaas Retuner you can tune alien visits and abductions yourself to prevent them from happening.

https://www.nraas.net/community/Members-Retuner-Settings

Otherwise, bluegenjutsu at Sims Asylum (free registration required) has a few tuning mods for aliens, including a no alien abductions mod.

http://simsasylum.com/tfm/index.php?/topic/4302-no-less-more-and-extreme-alien-abductions-requires-seasons-ep

You can look here for patterns - https://sssvitlans.tumblr.com/tagged/s3kids%20patterns
No promise the links work as the site is not being updated anymore.

My absolute favourite fabric patterns are the Elaborate Knits Pattern set from Simlicious:

https://www.simlicious.com/sims-3-downloads/patterns/fabric-elaborate-knitspattern-collection/

Actually, all the patterns on that site are great.

I recently reccomended some of my favourite fabric patterns from the Exchange in a different thread, so I'll copy the links here:

"PalmArrow;c-16977584" wrote:

Patterns:

I've been specifically searching for tweed patterns and for tropical patterns. Some of the ones I used and liked:

Tweed patterns:
Bright Tufts Tweed 2
Bright Tufts Tweed 3
SL Fine Tweed

Tropical patterns:
Tiki
Tiki2
Indonesian Batik
Batik 1
Blue Batik
Pattern-gl-315-79KS

Rabenbaeckchen has some great patterns and they are recolourable too!