There are several items available that are free after easy saver rebate at Staples until 4/30:
Pentel E Sharp Starter Set $5.99 (limit 1)
Submit $5.99 Easy Rebate
= Free
Duracell Batteries 20/pk $11.99 (limit 2)
Get 100% back in Staples Rewards (this prints at the end of your receipt–which you must submit online)
= Free
item # 703715 and/or 846026 only
3M Pop Up Tape $2.99
Submit $2.99 rebate
= Free