Hold on to Souvenir Packs, will take a long time but eventually will go up in price.
Buy the viewer pass -> complete challenges -> get drop
HLTV answer: yes
Serious answer: no more free drops, you buy pass and can get up to 3 souvenir cases of your own choice by completing missions, i.e. watching the match, pickem challenge (don't need to buy stickers, pickem included in pass), playing competitive maps