Best Projector Screen is Only for 25$ ( Most Practical DIY ) 

You should be google for stor curtain / roll up curtains... for this setup.
Look for your projector throwing distance and calculate your screen needs.
www.projectorcentral.com/proj...
Some of Curtain Alternatives You Might Want to Think About
www.ikea.com/us/en/p/fridans-...
www.ikea.com/us/en/p/tretur-b...
www.ikea.com/us/en/p/fyrtur-b...
www.ikea.com/us/en/p/riktig-d...
if you watch my other tutorials you can create complete home cinema setup for budget.
00:00 introducing 25$ Stor Curtain ( DIY Screen Project )
00:55 short room introdcution ( • Best Home Cinema Proje... )
02:13 how to install it to curtain rails you already have
02:40 230cm x 200 cm Curtain and Options and Potentials of it ( I am getting excited )
05:43 Short installation timelapse
05:50 After intallation Here we Have Hidden Projector Screen
07:12 Opening Screen For First Time
08:38 Projecting for First Time and impressions
10:19 Comparing Curtain to Professional Projector Screen
12:27 Back Side of Curtain and How Much Neighboors will see ? How to Solve it
14:15 Final Conclusion Positives and Negatives !
Hope you had fun and learned from this video :)