For folks that need some more inspiration, here's some useful links

https://cbbforum.com/viewtopic.php?f=6&t=7629&p=313428#p313428 - The CBB's (Conlang Board) thread for this year's Lexember, with links to previous years. There's generally a theme for each week.

Don't know where to start?

https://www.vulgarlang.com/ - will generate some basic stuff. I'd suggest using it for phonology (sounds) and then make the words yourself.

http://zompist.com/kit.html - the online version of the Languague Construction Kit. A how-to of the basics.

http://www.fridaynightlinguistics.org/languagecreation/ - Sheri Wells-Jensen's guide to creating languages